From the Matchbook website:

GP UPDATE
GP deposits are temporarily unavailable. We hope to have them available again in the next few days. We apologize for any inconvenience this may cause.
We've talked about this before, and it seems odd that they still allow withdrawals to GP--but can't accept deposits. Now they go front page with their GP issues. What could be going on here?

And it seems like PM might have had a heads up as to the GP issues as they've just come up with a deposit option that allows for them to hold the money so you don't get ground down by the two percent transaction fee. I like it, but is the timing suspicious?