I've been using StumbleUdon regularly and have really liked the concept. That is...until I read this:

http://tihomir.org/stumbleupon-can-g...essions-fraud/

Anyone have any comments or can settle my nerves?

hmm.. strange.. i read only half of the post.. but let me guess..
there is no impression fraud with stubmbleudon..
i mean.. it doesnt have anything to do with it..
all it does is makes some stumbles on stumblupon..
what brings traffic for us is stumbleupon..
so, real visitors, real impressions, real clicks..

correct me if i am wrong..

not only stumbling but anything not rational would make your adsense on the line
people go crazy with stumbling I'm not saying don't use stumbling but the amount of stumbles should go logically with other traffic sources...see?

making 100 stumbleudon at once without any other traffic sources is like calling adsense to ban you ...that's obvious

try to vary things

Free Invite Links:
http://stumbleudon.com/signup.php?r=...6k6b47e8dd2cc1
http://stumbleudon.com/signup.php?r=...lxee47e8b1814e

i don't understand it myself--- would seem the easiest way to kick a competitor would be to inflate their impressions -- gotta be more to it than that