WhatIsThatFile.com
I don't know about you, but I often fire up the Windows Task Manager and look for strange things or things that use up my resources for no good reason. But the Windows Task Manager simply lists filenames, which is not very useful when you're trying to figure out why some file called SPBBCSvc.exe is running on your machine when you have no software that you know about with "SP" or "BBC" in its name, running as a service.
If you're like me (and millions of others) you run to Google and hope that some hit will tell you something useful, such as in this case how SPBBCSvc.exe is a service that is part of my Symantec Internet Security bundle. Ok, I get the "S" but the P, 2 Bs and the C don't scream "Symantec Internet Security" to me...but I digress.
The point is that you want to know what files are, and you want to know quickly. This is where
WhatIsThatFile.com comes in. Using the simple form-field interface, start typing the name of the questionable file. If someone has submitted a description, it will tell you what the file is and if it is safe (or not!). If the file doesn't exist, you can add a file and description (once you figure it out the long way, via Google search or other means) so that others will know.
Good stuff, cuts to the chase, and very useful.
WhatIsThatFile.com.