OK, so I've often read people on these boards getting better results with Game Theory than Silverpath - that's no secret.
But I've been split testing Game Theory and Silverpath for only a little while now and these are the results:
Silverpath: 0 users, $0 revenue, $0 RPU
Game Theory: 18 users, $26.45 revenue, $1.47 RPU
So it looks like my link for Silverpath isn't working but I checked it with my AM, Taras, and apparently it is working - I wouldn't know I'm in the UK so can't check this.
So my question is: Why does Silverpath suck so much? Am I doing something wrong here? Or does Silverpath really suck this badly? 
is your rotator working correctly you shoudl have some visits to their path, I think your rotator is broken, try this, make the sp lp index1 and the gt lp index2 and then use this code for the page their would be
What heavyt said ^
There's gotta be something wrong, the 0 users thing doesn't make sense when comparing it to GT
For SP, if the user has seen a path in the last 15 or 30 days, they won't be counted.
Perhaps that's why?
lol, 0 users is the answer.