I'm very rarely the conversation starter. I do better with being spoken to and then replying, but occasionally I'll ask the usual how someone is doing at work, what's going on with school, and etc.. but that doesn't last long.
Online I very very rarely ever speak with someone first. 98% of the time others have to shoot me a message before I do just cause.. it's how I am. 8( I assume I'm pestering people or just don't do it unless someone wants to tell me something.