Gaydar?

Just something thats on my mind right now. I'm sure most of you know what gaydar is. If not, its a word similar to radar where you identify an object by searching around. Except in this case, gaydar is a coined term that refers to a persons ability to identify a gay person. I heard of many people say that they have good gaydar, but if that is true im sure i have horrible gaydar then. Most of the guys that i have liked were straight. I think my 'gaydar' would be better however, if i can better my eye contact skills. The reason for that is, when i look around and see a guy who's attractive, i take a glance at him, but am extremely scared to look back longer, even if i know he is looking back (peripheral vision). So yeah, just a thought out there.