I've been thinking about coming out to my gay uncle via facebook for quite some time now. I can't think of what to say though. Suggestions?
My advice would be to be honest. Your uncle is gay and he will definitely know how you might be feeling so I think any approach would work. I know it might be more broad than what you were looking for, but I really think you can start with whatever and however you want with this one. Best of luck
A few days ago I came out to my aunt who is also gay. I told her the story of how I realized I am gay and she replied "Wow- awesome!!! Welcome to the club!!!". Couldnt have had a better response. Since your uncle is gay he will be totally fine with it!
Just be honest with him and I'm sure he'll be a great support for you. Since he is gay he's probably had to go through all this himself so he knows what it's like. Good luck.