I think you start recieving traffic since stumble #1, but the more you get, the more chance you have of recieving traffic.
Joining more social neworking sites could yield more good results. Check it out the list of top social networking sites ranked on traffic and join them if you are looking for more traffic source; http://ebizmba.com/articles/social-bookmarking.html
I found it comes in waves - you can have an hour where you receive 200 hits and then it can be 2 or 3 per day a couple days later. That's what I found.
Is there any kind of optimizing/preference changes I need to make to my stumble account or just get a bunch of people to stumble my site? I just noticed my site is tagged under "water sports" which has nothing at all to do with my site. My site is about making money online. Is there any way to change that? That's probably why I'm not seeing any traffic