Can anyone help explain the following to me.

My webstats today showed a visitor who’d been referred from Facebook – the exact referrer being http://www.facebook.com/ext/share.php?sid=51690947713&h=kTKIr&u=cnKjv Clicking this link takes me to the Facebook website where I’m warned about certain things and if I’m happy click ‘Continue’. Clicking continue takes me to this website! I notice that I’ve a total of 4 referrers from Facebook.

I joined Facebook but don’t have anything about this website in my profile. Doing a search on Facebook doesn’t return anything for megabusblog etc. Where is the link to this blog in Facebook?

Although I joined Facebook I’m not exactly sure what I should do, or what happens. Maybe I’m too elderly to understand this type of site :-(