tedster - 9:58 pm on May 19, 2013 (gmt 0)
As I posted above, while there was a change of some kind on March 15, we have NO evidence it had anything to do with "paid to pass Page Rank". Since no one else has joined this thread with a similar suspicion, I'd suggest that the OP look for other potential causes for the ranking losses. Maybe start by taking a hard look at the sites that are now ranking and asking "what have they got going that my site doesn't."
With so many ranking factors in play these days, it doesn't pay to start with just a handful of assumptions.