Also I want to add feature request to the Reward Points System feature suggested above.
*Allow users to gain points for commenting in forums, for gaining reputation, and for being active in the forums.
As you just mentioned, Android is the most dominant mobile OS right now, and still keeps growing along others mobile OS's.
As mobile became one of the most used devices to surf the internet, download applications, music, and such I'm seeing it very useful and needed to support IP.Downloads in mobile skin.
A user could search by tags, and select more than one tag to filter content.
Here is a mockup for example:
If a user choose Tag1, all content that was tagged with Tag1 will be displayed. But if the user choose more than one tag (for example Tag1 & Tag5), only content that was tagged with both tags will be displayed.
Why not use a system like Facebook does which a user is recognized by his E-mail address and then he can choose a display name of his real name without worry that his name is already used by another member?<br>