Its off an MMO and when you log into another persons account or your account it will tell you were you last logged in from.

The numbers and letters are.

cpe-173-88-152-81.neo.res.ss.com

So what exactly is that. Sorry its prob a noob question.

Is there any way i can use this information to my advantage or is it even really anything important?

Its a host name; It contans the IP and info about the IP, On its own not good for much.