I'm new to using MU, so bear with me please. :D
OK, here's the idea.
I have a site with about 1500 members. I would like to integrate WP with my existing db so current members could simply click an 'activate' link and the activation eMail would be sent to them. New members would automagically have their information inserted and receive an activation eMail.
This is not ideal. IDEALLY, the activation eMail wouldn't even happen.
Are there plugins for this out there? Or am I going to be hard coding all this stuff.
Second question : What does the mu-plugins directory do? I've put plugins in there, and nothing happens.