Good app missing key features

Osfoora offers the option for muting usernames. This doesnt really make sense. If I wanted to mute someone I would just unfollow them. The only way I see this being an effective Muteing option is if you have the ability to choose a timeframe for the username to stay muted.

Muting should take into effect keywords and twitter apps.
For example any tweet that has the word "klout" I dont want to see it.
Any tweet that was tweeted from 4square or Yelp I dont want to see it.

Adding muting for keywords and apps is the KILLER feature this app is missing. Other than that it has become the defacto twitter client on my computer.

fxdgear about Osfoora for Twitter