Avatar, shmavatar: Online profile pics really do matter

After scavenging through thousands of strangers' Facebook photo albums, you learn a thing or two about how to represent yourself online. If you use social media, you've no doubt seen a few people who are a little shy about the whole profile picture thing. Maybe they leave up the pale blue default avatar or hide in a massive group of nubile co-eds. Or, perhaps they have an outdated photo -- or keep changing it every day. Before you update your profile, think about what images you use to represent yourself.