Developing a social network site

For a community you have to build activity and engagement, you really need to build up momentum over 6 - 12 months before you even worry about monitizing the community. Your niche, Gay, will be very loyal and profitable if you create a safe and fun environment for them. You might want to take a look at http://www.socialengine.com/ for a more advanced platform.

Mmm it looks so....pro!But i think for now i can keep using oxwall,cause i cant afford the money to buy it now.Do you think that keeping oxwall can have good results after a year?Which do you think is the best way to increase my traffic and rank on google?Thank you for you help.

I agree with namenetwork. You will want to win their loyalty and trust and not deceive them in receiving it. Because this niche is often repulsive to the general public, those who are involved will gravitate toward somewhere safe and helpful to their cause but, also a place to relax and have fun. Do not worry about making money off of Adsense or Amazon right now. You should work on getting more membership and probably spending money, advertising and getting the word out. Once your active membership is high enough you can inquire with specific advertisers within the niche and negotiate much more lucrative forms of income.