I'd always prefer a 'real life' group and meeting people in person, but you're always going to be limited by geography and also what people want out of a group.
If nothing else forums are useful for finding out what's in your area and if the answer to that is 'nothing' then a forum is also a useful place to hang out and get information and advice. You have to remember that as with everything on the internet any information and advice is on a 'user beware' basis but the good thing about the interweb is that there's plenty of different places to check out and compare.