Help Me Internet

1. How does one work in 2 Dreamwidth accounts simultaneously without logging out? I know there is a way, within DW, without using separate browsers. Does anyone know?

2. How do I allow anonymous comments in my community? I have poked around and then gone AAAAAAAAAH.

3. Why am I getting 2 notifications for every comment in that post?! (I have filed a support request).

Grumpy face!