Another way to increase your site traffic! I came across StumbleUpon Exchange recently. I realise that Stumblers aren’t very sticky but if you keep your site at the forefront for stumblers it’s a way to increase your traffic.
StumbleUpon Exchange (suexchange) is a new service that allows you to post your sites and have them stumbled by other StumbleUpon users.
You earn “Points” by stumbling other user’s sites and you use them by posting your site to be stumbled and having your own site stumbled. You can verify each stumble before you reward Points. You are given 3 Points on sign up, which you can use to post your site to be stumbled. Each stumble they give you cost a point, but once you verify they’ve stumbled your site and given them a Point back you get a Point. This way the stumbles keep coming as does the traffic!
Check it out! If you join through this link I’ll get a few extra points! 
Sounds reasonable that exchange of visits, encouraging the visitor to pass by your blog.