diff --git a/.gitignore b/.gitignore
index 9bdf0ca..7242b97 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 target
 .env
-*.ron
+*.toml
 cargo-remote
diff --git a/youmubot/src/commands/mod.rs b/youmubot/src/commands/mod.rs
index 6c3b173..0160e99 100644
--- a/youmubot/src/commands/mod.rs
+++ b/youmubot/src/commands/mod.rs
@@ -20,6 +20,8 @@ pub use community::COMMUNITY_GROUP;
 pub use fun::FUN_GROUP;
 pub use osu::OSU_GROUP;
 
+pub use announcer::Announcer;
+
 // A help command
 #[help]
 pub fn help(
diff --git a/youmubot/src/commands/osu/announcer.rs b/youmubot/src/commands/osu/announcer.rs
new file mode 100644
index 0000000..d789d99
--- /dev/null
+++ b/youmubot/src/commands/osu/announcer.rs
@@ -0,0 +1,96 @@
+use super::{embeds::score_embed, BeatmapWithMode};
+use crate::{
+    commands::announcer::Announcer,
+    db::{OsuSavedUsers, OsuUser},
+    http::{Osu, HTTP},
+};
+use reqwest::blocking::Client as HTTPClient;
+use serenity::{
+    framework::standard::{CommandError as Error, CommandResult},
+    http::Http,
+    model::{
+        id::{ChannelId, UserId},
+        misc::Mentionable,
+    },
+    prelude::ShareMap,
+};
+use youmubot_osu::{
+    models::{Mode, Score},
+    request::{BeatmapRequestKind, UserID},
+    Client as OsuClient,
+};
+
+/// Announce osu! top scores.
+pub struct OsuAnnouncer;
+
+impl Announcer for OsuAnnouncer {
+    fn announcer_key() -> &'static str {
+        "osu"
+    }
+    fn send_messages(
+        c: &Http,
+        d: &mut ShareMap,
+        channels: impl Fn(UserId) -> Vec<ChannelId>,
+    ) -> CommandResult {
+        let http = d.get::<HTTP>().expect("HTTP");
+        let osu = d.get::<Osu>().expect("osu!client");
+        // For each user...
+        let mut data = d
+            .get::<OsuSavedUsers>()
+            .expect("DB initialized")
+            .read(|f| f.clone())?;
+        for (user_id, osu_user) in data.iter_mut() {
+            let mut user = None;
+            for mode in &[Mode::Std, Mode::Taiko, Mode::Mania, Mode::Catch] {
+                let scores = OsuAnnouncer::scan_user(http, osu, osu_user, *mode)?;
+                if scores.is_empty() {
+                    continue;
+                }
+                let user = user.get_or_insert_with(|| {
+                    osu.user(http, UserID::ID(osu_user.id), |f| f)
+                        .unwrap()
+                        .unwrap()
+                });
+                for (rank, score) in scores {
+                    let beatmap = BeatmapWithMode(
+                        osu.beatmaps(http, BeatmapRequestKind::Beatmap(score.beatmap_id), |f| f)?
+                            .into_iter()
+                            .next()
+                            .unwrap(),
+                        *mode,
+                    );
+                    for channel in channels(*user_id) {
+                        channel.send_message(c, |c| {
+                            c.content(format!("New top record from {}!", user_id.mention()))
+                                .embed(|e| score_embed(&score, &beatmap, &user, Some(rank), e))
+                        })?;
+                    }
+                }
+            }
+            osu_user.last_update = chrono::Utc::now();
+        }
+        // Update users
+        let f = d.get_mut::<OsuSavedUsers>().expect("DB initialized");
+        f.write(|f| *f = data)?;
+        f.save()?;
+        Ok(())
+    }
+}
+
+impl OsuAnnouncer {
+    fn scan_user(
+        http: &HTTPClient,
+        osu: &OsuClient,
+        u: &OsuUser,
+        mode: Mode,
+    ) -> Result<Vec<(u8, Score)>, Error> {
+        let scores = osu.user_best(http, UserID::ID(u.id), |f| f.mode(mode).limit(25))?;
+        let scores = scores
+            .into_iter()
+            .filter(|s: &Score| s.date >= u.last_update)
+            .enumerate()
+            .map(|(i, v)| (i as u8, v))
+            .collect();
+        Ok(scores)
+    }
+}
diff --git a/youmubot/src/commands/osu/mod.rs b/youmubot/src/commands/osu/mod.rs
index c0e67ce..24a11af 100644
--- a/youmubot/src/commands/osu/mod.rs
+++ b/youmubot/src/commands/osu/mod.rs
@@ -21,6 +21,7 @@ mod cache;
 pub(crate) mod embeds;
 mod hook;
 
+pub use announcer::OsuAnnouncer;
 use embeds::{beatmap_embed, score_embed, user_embed};
 pub use hook::hook;
 
diff --git a/youmubot/src/db/mod.rs b/youmubot/src/db/mod.rs
index e115383..0922b9f 100644
--- a/youmubot/src/db/mod.rs
+++ b/youmubot/src/db/mod.rs
@@ -33,6 +33,9 @@ where
     }
 }
 
+/// A map from announcer keys to guild IDs and to channels.
+pub type AnnouncerChannels = DB<HashMap<String, GuildMap<ChannelId>>>;
+
 /// A list of SoftBans for all servers.
 pub type SoftBans = DB<GuildMap<ServerSoftBans>>;
 
@@ -49,9 +52,10 @@ pub fn setup_db(client: &mut Client) -> Result<(), Error> {
         PathBuf::from("data")
     });
     let mut data = client.data.write();
-    SoftBans::insert_into(&mut *data, &path.join("soft_bans.ron"))?;
-    OsuSavedUsers::insert_into(&mut *data, &path.join("osu_saved_users.ron"))?;
-    OsuLastBeatmap::insert_into(&mut *data, &path.join("last_beatmaps.ron"))?;
+    SoftBans::insert_into(&mut *data, &path.join("soft_bans.toml"))?;
+    OsuSavedUsers::insert_into(&mut *data, &path.join("osu_saved_users.toml"))?;
+    OsuLastBeatmap::insert_into(&mut *data, &path.join("last_beatmaps.toml"))?;
+    AnnouncerChannels::insert_into(&mut *data, &path.join("announcers.toml"))?;
 
     Ok(())
 }
diff --git a/youmubot/src/main.rs b/youmubot/src/main.rs
index 5295dfe..6f5d556 100644
--- a/youmubot/src/main.rs
+++ b/youmubot/src/main.rs
@@ -12,6 +12,9 @@ mod commands;
 mod db;
 mod http;
 
+use commands::osu::OsuAnnouncer;
+use commands::Announcer;
+
 const MESSAGE_HOOKS: [fn(&mut Context, &Message) -> (); 1] = [commands::osu::hook];
 
 struct Handler;
@@ -54,6 +57,9 @@ fn main() {
     // Create handler threads
     std::thread::spawn(commands::admin::watch_soft_bans(&mut client));
 
+    // Announcers
+    OsuAnnouncer::scan(&client, std::time::Duration::from_secs(60));
+
     println!("Starting...");
     if let Err(v) = client.start() {
         panic!(v)