Hi, I am new to this site, and I'm not very computer savvy as this is my first mac. Today I noticed a folder/icon at the bottom of my desktop that had the "@" symbol on it, and the letters "http" below it. My concern is, I don't know how it got there. When I clicked it, it went to a band website I go to. I guess I'm concerned with security and want to know if this is anything I should worry about being as I've never seen that little icon before. ty.