I used to have visitors spikes from stumbleupon.com whenever I stumble any of my tutorials ( I used to stumble the new tutorials once). Now, I don't get a single visit either when I or even members of DP stumble my site or sub pages. What happened? was my domain banned? and if so, is there anyway o fix that?
Try opening up another account, if your stumbles become spammy looking they lower your rank. Make sure you are "thumbs uping" other articles. The ratio should be 20:1 at least everyday.
But I didn't get visitors even when other DP members stumbled my site! Do you still think opening a new account would help?
Give it a go, but don't stumble your own website and then place links on your profile to the same websites, as you'll get caught. -- Phil