Yeah, it's called a footprint. That particular one means you're running wordpress-mu(and they can gen a blog)
Not running MU but that wasn't the exact query...just see some similar type searches for specific WP related .php files. At first I thought it was someone trying to hack but then I started noticing some shady looking sites in my external link list. I'll do some searching on here for a fix.
It's weird. Experience, friends who know their shit, sometimes blogs, messageboards, chats, etc. It's spread out.
Thanks. Trying to focus on action oriented tasks that make me monies over reading and learning but I better schedule some time because the automation you guys are scaling sounds way better than doing everything manually like I am now.
Also, thanks Rage9 (haven't figured out the multiquote).