When he launched it, he gave some bits to first few users here and IIRC on his website, an address is given by him (in which that could be used only). I tried back in the days but the questions were only few and even though some answered correctly, they never got anything from some users that asked question (AFAIK), since the control is by the one who asks questions and no moderation done to ensure the whole process be fair to those put an actual effort and find the correct answer first.
To be honest, I hope it was possible to delete inappropriate answers. I mean, I asked a question to find me the cheapest store and some user just spam my topic with their website and some even post a faucet rotator link. I left the website without marking a correct answer, lol.That is really too bad. People always find a way to come out on top themselves, even if someone else is asking for their help.
The idea is quite interesting though, being able to earn some tips for helping someone out.
If you need some serious help on a specific topic, it may still be better to find a dedicated forum on that subject and just ask there. Make sure to introduce yourself first, this will often give much more elaborate responses by specialists there.
not really sure how the tip works to be honest. But seems that the site has less interest from the bitcoin community. Need a great marketing to promote this site so that many people will use this site. 
