I agree with the suggestion to ask one of the male FA's on EK (if you're flying). I have met a few of them over the years and they are all very much knowledgeable about anything gay in Dubai, since there is very little of it to know...

The things that I can vaguely remember from guy that I met earlier this year - hopefully someone else can fill in the details:

As noted there is one hotel who has an unofficial "gay night" once a week. For some reason, the Crowne Plaza comes to mind. This is mostly filled with EK cabin crew, gay expats and the few tourists/businessmen in the know.

Also, word is that Jules bar at Le Meridien has a very gay crowd - if you google it, you'll see a number of references.

Other than those tips, it's a pretty un-gay city. There biggest gay meeting place is, by far, the Internet. Gayromeo.com is more of the standard there and there are lots of guys who are happy to give you advice, just meet for a drink, or more... You may run into an issue accessing it, however, due to the UAE firewall ("censorwall"). I stay at the Grand Hyatt, which, thankfully, somehow gets around it.