We were just in Ft. Lauderdale and there are a TON of bars there. We didn't hit any, so I can't help you with any of the specifics, but if you like bar hopping you will be kept quite busy.
The main gay section is Wilton Manor, but there are gay bars all over the town. You can pick up a number of gay entertainment guides in most of the stores/restaurants and they will tell you where the bars are and what is happening in each one.
I love Ft. Lauderdale. Me and the DP try to make it down about once a year (although we couldn't make it last year). We normally stay at Gigi's ( www.gigisresort.com is the website I think), and that puts us right near the gay beach and just a few blocks from Las Olas Blvd.