Here is the response from Adsense Support when asked about the use of BlogRush: A bit of a non-answer...
Boo. Hiss. (At least you got an answer. Still waiting on mine.) I just went ahead and added it. *throws tomato*
I'd say: "We don't encourage or endorse the use of a program like this" Means: "Use it at you rown risk, 'cause we might kick your arse sooner than later :|"
Hmm I don't quite get it why google would have a problem with this. Isn't this just like some sort of blogroll when two owners of blogs link each other ?
Yeah, that is kind of what I figured. Either way, it hasn't exactly worked for me at all yet, 0 visitors through Blogrush...
Tearabite Thanks, for posting Google’s response to our inquiry! At least we know where we stand now… LOL I can see the reason why Google can not give a definite answer on this apparatus. It is still too new, and no one, not even G has any idea of its true potential or affect. So, we ride the wave, only time will answer this for us. I hope that Google would have the decency to warn people first if it ever became a problem, before they just yank accounts. One good aspect about the gadget, it runs on JavaScript! I have heard others say, “Google does not read or follow JavaScript†on websites. So maybe, google bots might not even detect it? I think this little gadget is pretty sexy, plus it’s great for the blogosphere. I have looked at more blogs in just the last couple days than had in three months previously. Ride the wave! Boulder
So the Google Adsense Support's answer to your question is that they are not going to give you an answer. How useful they are...
Blogrush is starting to smell like a scam. I've shown 8k impressions in three days, got zero in return. I've spoken to other bloggers who have had three times my amount, and haven't seen an ounce of traffic. Pretty good deal for blogrush to have all this free traffic, and not deliver one single visitor. I'll give it another day, thats it.