I went to Bar Fama on a Saturday night a couple weekends ago for the first time based on this recommendation. I arrived around midnight and the place was virtually empty with 3 customers, including me. There were about 7-8 working guys outside the bar, most of them in the 18-25 age range, and they rotated in and out of the bar over the time that I was there. They were all fairly friendly, some stopping over to say hello, yet not overly aggressive. If you wanted a guy, the only place inside to go was the restrooms (they can be locked/private), or you could go to a nearby hotel by the hour. I could not find the area where an earlier poster mentioned that there was a railing with guys hanging over it getting blowjobs.
While virtually empty, I was quite happy having met this 21 year old ripped guy who took out his 10 inch dick in the bathroom and then things progressed from there. A R$30 tip ($10 USD) to him was well worth it. Inspired me to meet another guy there, which I was happy to meet up with, but not quite as good as the first.
It's a different scene yet can be very rewarding. Close to Republica area if you want to head over there after this bar. A couple photos of the inside of the bar.