In addition, when we read vague information about someone, we mentally fill in the blanks with specific details that may be incorrect (Norton & Frost, 2007).For example, when you read in a man’s profile that he’s a movie buff, you might think that's something you have in common, but when you get to talking about movies on your date you realize that you’re a foreign film aficionado, while he’s obsessed with horror flicks.
It is well documented that physical attractiveness is a major factor in romantic attraction, especially initial attraction (Sprecher, 1989).
Not surprisingly, physically attractive people are more successful at online dating (Hitsch et al., 2005).
One study of online daters found that most viewed each other as similar, and liked each other less, after than before their offline dates (Norton et al., 2007).
The sites can put too much focus on physical attractiveness.
Pros: Access to more people and more types of people.