A few questions about this site

[Boobular]

So I've been on/off for almost a year now, but I still don't get a few things.

I can only answer and have a few outbox messages at any given moment. So this basically takes me forever to get thru mail, and I've pretty much given up on reading them for months now. It says I need to reach a number of posts first. At my rate, that too is going to take forever haha. What is the point of having a limit, and how many posts do I need?

And on friends. Everyone seems to add everyone, so again what is the point? (I know it's not technically everyone, but I'd say around 90%) Wouldn't it just be easier to have an "accept all" button?