Yes - I am a member of the Independent Oracle User Group and Utah Oracle Users Group.
User groups have benefited my career more than anything else I've done. I've learned hard skills (in short, one-hour chunks, which is perfect). I've networked and attending the meetings, training, etc. It has helped to legitimize my career and reminds me we are a network of professionals. I HIGHLY recommend participation. The times I've presented, I've learned MUCH more than the attendees of my sessions.