Tremendously.
When I first came to JUB, I was crushed and heartbroken; I'd lost all my friends. For a long time I felt like I had met a new group of friends.  But after a while I realized that the 

 and the 

 and even the 

 weren't providing what I came to recognize as a real need in my life...
Oh, I've had some wonderful chats and PM exchanges with at least a couple of my fellow participants, and they helped me feel warmer and more OK....
but as soon as I logged off the cold empty feeling was still there.  As a matter of fact, it still is, but I have realized that if I want that to change I'm going to have to work on that myself and it means getting out there in the world and interacting with other people face-to-face.
As a result I have spent less time at JUB 
 
To the (several) posters who've commented that they "trust less," implying that they've had some rather unsavory or at best disappointing "encounters" through JUB, I have to say I don't feel the same.  I was pretty down on men, especially many types of gay men, before coming to JUB.  I had given up any hope of finding prince charming up under a toadstool, so I never got trapped by my own expectations.
I asked myself, "Okay, say the worst happens, and I'm going to die ugly and bitter and alone...and I know this for a fact.  What am I going to do to deal with that 
TODAY..."  That has helped me a great deal; it's certainly helped my sense of humor.