Hi, and welcome.
There aren't really any unwelcome topics of conversation on here (that I can think of!) as long as you treat controversial and highly personal subjects sensitively. I'd suggest reading the forum rules for banned topics such as anything illegal or dangerous, but other than that, feel free to say what you feel.
Oh, and keep the discussion mainly to the stated topic, don't go rambling off (like I do!)
Join in, have fun, and you'll soon feel at home.
If you can't find a thread on your favourite subject, you can start one in the appropriate section of the forums. "Off-Topic" is there for a reason, and where most of the silliness happens!
All the best,
MrMr