A popular blog that was putting out some nice values to others that link to me recently died, and was promptly removed from the game. As this was one that was pumping out extra value because of the number of outgoing links, the trickle down effect resulted in crashing values all around.
There still aren't enough blogs hitting the target spot to keep values up, losing just that one was a major blow, but if any others can hit the right spot, we'll see a nice increase again. If we can get two more, I think we'll have stable growth, three or more would see a major long term upward movement in values.