diff --git a/internal/database/handlers.go b/internal/database/handlers.go
index a53c15b..058b278 100644
--- a/internal/database/handlers.go
+++ b/internal/database/handlers.go
@@ -4,6 +4,11 @@ import (
 	"database/sql"
 )
 
+type Queryer interface {
+	Exec(query string, args ...any) (sql.Result, error)
+	QueryRow(query string, args ...any) *sql.Row
+}
+
 func GetBoards(db *sql.DB) ([]Board, error) {
 	rows, err := db.Query(`
 		SELECT id, name, slug, tag 
@@ -83,7 +88,7 @@ func GetThread(db *sql.DB, threadId int) (Thread, error) {
 
 func GetPosts(db *sql.DB, threadId int) ([]Post, error) {
 	rows, err := db.Query(`
-		SELECT id, thread_id, author, body, created_at, media_path, ip_hash 
+		SELECT id, thread_id, author, body, created_at, media_path, ip_hash, number 
 		FROM posts 
 		WHERE thread_id = ?`, threadId)
 
@@ -95,7 +100,7 @@ func GetPosts(db *sql.DB, threadId int) ([]Post, error) {
 	var result []Post
 	for rows.Next() {
 		var p Post
-		err := rows.Scan(&p.Id, &p.ThreadId, &p.Author, &p.Body, &p.CreatedAt, &p.MediaPath, &p.IpHash)
+		err := rows.Scan(&p.Id, &p.ThreadId, &p.Author, &p.Body, &p.CreatedAt, &p.MediaPath, &p.IpHash, &p.Number)
 		if err != nil {
 			return nil, err
 		}
@@ -107,13 +112,13 @@ func GetPosts(db *sql.DB, threadId int) ([]Post, error) {
 
 func GetOriginalPost(db *sql.DB, threadId int) (Post, error) {
 	row := db.QueryRow(`
-		SELECT id, thread_id, author, body, created_at, media_path, ip_hash
+		SELECT id, thread_id, author, body, created_at, media_path, ip_hash, number
 		FROM posts 
 		WHERE thread_id = ? 
 		ORDER BY created_at ASC LIMIT 1`, threadId)
 
 	var r Post
-	err := row.Scan(&r.Id, &r.ThreadId, &r.Author, &r.Body, &r.CreatedAt, &r.MediaPath, &r.IpHash)
+	err := row.Scan(&r.Id, &r.ThreadId, &r.Author, &r.Body, &r.CreatedAt, &r.MediaPath, &r.IpHash, &r.Number)
 	if err != nil {
 		return Post{}, err
 	}
@@ -140,11 +145,7 @@ func PutThread(db *sql.DB, boardSlug string, subject string, body string, mediaP
 		return err
 	}
 
-	_, err = tx.Exec(`
-		INSERT INTO posts (thread_id, body, media_path, ip_hash) 
-		VALUES (?, ?, ?, ?)`, threadId, body, mediaPath, ip_hash)
-
-	if err != nil {
+	if err := PutPost(tx, boardSlug, int(threadId), body, mediaPath, ip_hash); err != nil {
 		return err
 	}
 
@@ -155,10 +156,26 @@ func PutThread(db *sql.DB, boardSlug string, subject string, body string, mediaP
 	return nil
 }
 
-func PutPost(db *sql.DB, threadId int, body string, mediaPath string, ip_hash string) error {
+func PutPost(db Queryer, boardSlug string, threadId int, body string, mediaPath string, ip_hash string) error {
+	row := db.QueryRow(`
+		SELECT MAX(p.number)
+		FROM posts p 
+		INNER JOIN threads t ON p.thread_id = t.id
+		WHERE t.board_slug = ?`, boardSlug)
+
+	var latestPostNumber sql.NullInt64
+	if err := row.Scan(&latestPostNumber); err != nil {
+		return err
+	}
+
+	newPostNumber := 1
+	if latestPostNumber.Valid {
+		newPostNumber = int(latestPostNumber.Int64) + 1
+	}
+
 	_, err := db.Exec(`
-		INSERT INTO posts (thread_id, body, media_path, ip_hash) 
-		VALUES (?, ?, ?, ?)`, threadId, body, mediaPath, ip_hash)
+		INSERT INTO posts (thread_id, body, media_path, ip_hash, number) 
+		VALUES (?, ?, ?, ?, ?)`, threadId, body, mediaPath, ip_hash, newPostNumber)
 
 	if err != nil {
 		return err
diff --git a/internal/database/models.go b/internal/database/models.go
index 15f1424..01b9489 100644
--- a/internal/database/models.go
+++ b/internal/database/models.go
@@ -25,4 +25,5 @@ type Post struct {
 	CreatedAt time.Time
 	MediaPath string
 	IpHash    string
+	Number    int
 }
diff --git a/internal/database/seed.sql b/internal/database/seed.sql
index 2ae1306..2282c03 100644
--- a/internal/database/seed.sql
+++ b/internal/database/seed.sql
@@ -23,6 +23,7 @@ CREATE TABLE IF NOT EXISTS threads (
 CREATE TABLE IF NOT EXISTS posts (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     thread_id INTEGER NOT NULL,
+    number INTEGER NOT NULL,
     author TEXT DEFAULT 'Anonymous',
     body TEXT NOT NULL,
     created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
diff --git a/internal/util/cooldowns.go b/internal/util/cooldowns.go
index 401fa52..2e37049 100644
--- a/internal/util/cooldowns.go
+++ b/internal/util/cooldowns.go
@@ -17,8 +17,11 @@ var (
 
 var CooldownMutex sync.Mutex
 
-const POST_COOLDOWN = 15 * time.Second
-const THREAD_COOLDOWN = 2 * time.Minute
+// const POST_COOLDOWN = 15 * time.Second
+const POST_COOLDOWN = 0 * time.Second
+
+// const THREAD_COOLDOWN = 2 * time.Minute
+const THREAD_COOLDOWN = 0 * time.Minute
 
 func IsOnCooldown(ip string, m map[string]time.Time, duration time.Duration) bool {
 	CooldownMutex.Lock()
diff --git a/web/main.go b/web/main.go
index ecbbb52..9bf2652 100644
--- a/web/main.go
+++ b/web/main.go
@@ -78,7 +78,6 @@ func main() {
 	// THREAD PAGE
 	r.Get("/{slug}/threads/{threadId}", func(w http.ResponseWriter, r *http.Request) {
 		slug := chi.URLParam(r, "slug")
-		// TODO: use relative thread_nums (see issue #1)
 		threadIdStr := chi.URLParam(r, "threadId")
 		threadId, err := strconv.Atoi(threadIdStr)
 		if err != nil {
@@ -165,8 +164,7 @@ func main() {
 			return
 		}
 
-		// slug := chi.URLParam(r, "slug")
-		// TODO: use relative thread_nums (see issue #1)
+		slug := chi.URLParam(r, "slug")
 		threadIdStr := chi.URLParam(r, "threadId")
 		threadId, err := strconv.Atoi(threadIdStr)
 		if err != nil {
@@ -201,7 +199,7 @@ func main() {
 			mediaPath = filename
 		}
 
-		if err := database.PutPost(db, threadId, body, mediaPath, util.HashIp(ip)); err != nil {
+		if err := database.PutPost(db, slug, threadId, body, mediaPath, util.HashIp(ip)); err != nil {
 			http.Error(w, "Failed to create post", http.StatusInternalServerError)
 			log.Printf("PutPost: %v", err)
 			return
@@ -256,7 +254,6 @@ func main() {
 	// THREAD POSTS
 	r.Get("/hx/{slug}/threads/{threadId}/posts", func(w http.ResponseWriter, r *http.Request) {
 		// slug := chi.URLParam(r, "slug")
-		// TODO: use relative thread_nums (see issue #1)
 		threadIdStr := chi.URLParam(r, "threadId")
 		threadId, err := strconv.Atoi(threadIdStr)
 		if err != nil {
diff --git a/web/views/thread.templ b/web/views/thread.templ
index 655e42a..9a2e01f 100644
--- a/web/views/thread.templ
+++ b/web/views/thread.templ
@@ -10,7 +10,7 @@ import (
 
 templ PostOriginal(post database.Post, thread *database.Thread) {
 {{ imgInfo := util.GetPostImageInfo(post.MediaPath) }}
-<article id={ fmt.Sprintf("post-%d", post.Id) } class="post-op">
+<article id={ fmt.Sprintf("post-%d", post.Number) } class="post-op">
 	<div>
 		File:
 		<a href={ templ.URL("/static/img/posts/full/" + post.MediaPath) } class="post-filename">
@@ -28,9 +28,9 @@ templ PostOriginal(post database.Post, thread *database.Thread) {
 		<span class="post-author">{ post.Author }</span>
 		<span class="post-date">{ post.CreatedAt.Format("01/02/2006") }</span>
 		<span class="post-time">{ post.CreatedAt.Format("15:04") }</span>
-		<span _={ fmt.Sprintf("on click set #newPostBody.value to #newPostBody.value + '>>%d\n'", post.Id) }
+		<span _={ fmt.Sprintf("on click set #newPostBody.value to #newPostBody.value + '>>%d\n'", post.Number) }
 				class=" post-num">
-			No.{ strconv.Itoa(post.Id) }
+			No.{ strconv.Itoa(post.Number) }
 		</span>
 		<span class="post-replies"></span>
 	</header>
@@ -42,14 +42,14 @@ templ PostOriginal(post database.Post, thread *database.Thread) {
 
 templ PostReply(post database.Post) {
 {{ imgInfo := util.GetPostImageInfo(post.MediaPath) }}
-<article id={ fmt.Sprintf("post-%d", post.Id) } class="post">
+<article id={ fmt.Sprintf("post-%d", post.Number) } class="post">
 	<header class="post-header">
 		<span class="post-author">{ post.Author }</span>
 		<span class="post-date">{ post.CreatedAt.Format("01/02/2006") }</span>
 		<span class="post-time">{ post.CreatedAt.Format("15:04") }</span>
-		<span _={ fmt.Sprintf("on click set #newPostBody.value to #newPostBody.value + '>>%d\n'", post.Id) }
+		<span _={ fmt.Sprintf("on click set #newPostBody.value to #newPostBody.value + '>>%d\n'", post.Number) }
 				class=" post-num">
-			No.{ strconv.Itoa(post.Id) }
+			No.{ strconv.Itoa(post.Number) }
 		</span>
 		<span class="post-replies"></span>
 	</header>