We all tend to look for our 'tribe' - people we can share interests, pass times and stories with. Every social circle has a specific code of belonging. Jobs, vacation destinations, what you read, where you eat. There are two ways to do a dating profile - to show your social level (if you expect to meet women from the same circle) or try to reach a different group. For example - if you're a tech-guy who wants to meet an artsy gallerina - it would make sense to add a picture of you at the gallery opening or admiring some avant-garde painting.