Asking (or begging) for a follow comes out as needy. Some people don't realize that it has the opposite effect of what they are asking. One thing to note is that this a behavior that for the most part is observed on a lot of new accounts.

Maybe it's a symptom of lack of social skills for some people. If you are reading this and you are constantly asking others to follow you stop it. It does not work. Instead actually read what the other person is saying and make a comment about it. You will get more followers that way.