I just got stumbled for the first time a couple days ago (my site is pretty new, and even more recently public), and while it didn't get my thousands, it did get me about 200 new visitors. I don't know how many will return (which is really the key to me... I'm doing it because I want interaction, not just to make money). So, if you like any of my stuff at
my blog please feel free to stumble it... and even if you don't stumble it, let me know anything you do or don't like, and please leave comments!
I'm also looking at several of the sites from this thread... haven't really gotten started yet, but you can expect a few stumbles for whichever pages I like.