[vhpk]

I think why don't we hold an exam called " chemistry challenge" or something similar, in this exam we make a questionaire about 5 or 10 questions and have the time limited for all member to send their answer.
After that, we check the answer and mark for each candidate. That sounds interesting

[enahs]

Chem Central board, child board QotD (Question of the Day). Make some up and have fun. Though, I suspect that now that it is summer and most people are done with exams, the traffic for this site will go down, and the peoples willingness to take more test will go down even further.

[Borek]

Problem could arise with those putting their homework questions as a challenge questions.