Actually I was not asking for suggestions but rather guesses for 2012 Zeitgeist trends.
Anyway, the site has classes contributed by people that often have the needs themselves.
There are several bioinformatic classes already. More classes for that purpose are always helpful.
Several bioinformatic classes were nominated to the innovation award and their contributors earned prizes.
If you have your own bioinformatic classes, you may ways want to contribute and eventually be nominated to the Innovation Award.