diff --git a/dbTools/post.js b/dbTools/post.js
index dac82d8..55f2c64 100644
--- a/dbTools/post.js
+++ b/dbTools/post.js
@@ -29,9 +29,7 @@ postDB = (DB)=>{
         const id = DB.ObjectID(postid);
         let update = {
             $unset:{
-                reactions:{
-                    [userid]: {}
-                }
+                ["reactions." + profileid]: ""
             },
             $set: {
                 lastUpdated: new Date()
diff --git a/dbTools/profile.js b/dbTools/profile.js
index 2960d39..0cbb12b 100644
--- a/dbTools/profile.js
+++ b/dbTools/profile.js
@@ -13,7 +13,7 @@ userDB = (DB) => {
     }
 
     DB.getProfile = async (profileId) => {
-        if (userProfileCache[profileId]) return userProfileCache[profileId];
+        //if (userProfileCache[profileId]) return userProfileCache[profileId];
         const _id = DB.ObjectID(profileId);
         let r = await DB.profileCols.findOne({ _id }).catch((err) => {
             console.log(err);
@@ -68,6 +68,31 @@ userDB = (DB) => {
         return r;
     }
 
+    DB.subscribeToGroup = async (profileid, groupid) => {
+        const _id = DB.ObjectID(groupid);
+        let update = {
+            $set:{
+                ["subscribed." + profileid]: new Date()
+            }            
+        }
+        return DB.profileCols.updateOne({_id}, update).catch((err)=>{
+            console.log(err);
+            return false;
+        });
+    }
+
+    DB.unsubscribeToGroup = async (profileid, groupid) => {
+        const _id = DB.ObjectID(groupid);
+        let update = {
+            $unset:{
+                ["subscribed." + profileid]: "",
+            }            
+        }
+        return DB.profileCols.updateOne({_id}, update).catch((err)=>{
+            console.log(err);
+            return false;
+        });
+    }
 
 }
 
diff --git a/def/profile.js b/def/profile.js
index e9950d3..09a7335 100644
--- a/def/profile.js
+++ b/def/profile.js
@@ -18,6 +18,7 @@ class User {
         this.newsFeedCache = info.newsFeedCache || [];
         this.isGroup = info.isGroup || false;
         this.isCourse = info.isCourse || false;
+        this.subscribed = info.subscribed || {};
     }
 
     toObj(){
@@ -32,6 +33,7 @@ class User {
         r.newsFeedCache = this.newsFeedCache;
         r.isGroup = this.isGroup;
         r.isCourse = this.isCourse;
+        r.subscribed = this.subscribed;
         return r;
     }
 
diff --git a/routes/post.js b/routes/post.js
index 0b3133b..afa383a 100644
--- a/routes/post.js
+++ b/routes/post.js
@@ -7,7 +7,7 @@ const Post = require("./../def/post.js");
 DB.getDB.then((DB)=>{
 
     const getProfileId = (req)=>{
-        return DB.ObjectID(req.cookies.profile_id);
+        return DB.ObjectID(req.cookies.profile_id || req.query.profile_id || req.body.profile_id);
     }
 
     router.get("/", async (req, res) => {
diff --git a/routes/profile.js b/routes/profile.js
index e38d6c3..74c9a99 100644
--- a/routes/profile.js
+++ b/routes/profile.js
@@ -11,6 +11,10 @@ DB.getDB.then((DB)=>{
         return DB.ObjectID(user_sid);
     }
 
+    const getProfileId = (req)=>{
+        return DB.ObjectID(req.cookies.profile_id || req.query.profile_id || req.body.profile_id);
+    }
+
     router.get("/mine", async (req, res) => {
         let userid = req.cookies.user_sid;
         let profiles = await DB.getUserProfiles(userid);
@@ -65,6 +69,24 @@ DB.getDB.then((DB)=>{
         });
     });
 
+    router.get("/groups/:id/subscribe", async (req, res) => {
+        const groupid = req.params.id;
+        const profileid = getProfileId(req);
+        DB.subscribeToGroup(profileid, groupid);
+        return res.json({
+            status: "ok"
+        });
+    });
+
+    router.get("/groups/:id/unsubscribe", async (req, res) => {
+        const groupid = req.params.id;
+        const profileid = getProfileId(req);
+        DB.unsubscribeToGroup(profileid, groupid).then(console.log);
+        return res.json({
+            status: "ok"
+        });
+    });
+
     router.get("/:id", async (req, res) => {
         let profileId = req.params.id;
         let profile = await DB.getProfile(profileId);