Are you behind a router?
If so, then you must either forward port 27015 to your computers local network IP address or set your computers local ip address as the DMZ host. I know to access these on most linksys routers you go to this address:
http://192.168.1.1
When the login box comes up the default username and password is admin and admin, if you changed these when you setup your router then you must enter what u said. If you forgot, hold down the reset button on the router for 15 seconds and it will clear all of the routers information.
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To clarify my problem, I am only seeing very few SF servers running at all. There are no SNAFUs or any other dedicated ones that are always on. Is this a problem with me or steam or its not a problem at all and thats the way everyone has it now?