Blackmesa is up and running at this point.
In the future if you notice a server is down, there is no need to post a thread about it. Instead we would much prefer that you join Ventrilo and let a member of TF2 Leadership know, or send one a Steam PM. Chances are we already know of the issue and the tech team is working on getting the server back up ASAP.
Thanks though!
Good Luck and Happy Fragging!
-Locked
-Kevi