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Understandably..

The major things that are necessary at this point is making the ui smooth for all users, most especially mobile users

I totally agree... mobile is the key to further expansion... a mobile app would easily have twice as many threads with no effort

Exactly....

Just like Twitter...

We need to pump up the mobile side because more than 85% of our potential users will prefer using their mobile than using PC

For sure! you are totally right