I never make the first move either, but lately I've begun to "try" anyway. It's mainly because I am afraid I'll bother others, like they think like "What does he want?", or also because I am afraid I'll have to be myself and talk about personal things I am ashamed of, like my life, etc.
Adding or having friends here is not always something that happens right away... because you have to read their posts first or chat with them to get an idea what kind of people they are. But some members don't post or write much, so... Unless you just want to add friends for the sake of it like on facebook, where you can have one thousand friends even if you have never even talked to them once.