Kiska - 1:20 am on Jan 22, 2008 (gmt 0) So, I would give it a try.
You can try to open a new account. She said that currently they are not letting anybody open a Content Match account. Our rep is not the brightest crayon in the box, so I would give it a try and see if it works. If you are getting impressions, then it is working. If you are not getting impressions over a couple of days, try checking on the status of the approval. If it is still pending call YSM and ask if they can help. If it is approved and still no impressions, it could be a tech problem on YSM's side. You would have to call them and have them fix it. They will tell you at that point if CM is down.
So, I would give it a try.