Some usefull notes on Debian Sid

I found a very useful article here: http://wooledge.org/~greg/sidfaq.html

The answered questions are the following:

1. What is sid?
2. What is unstable?
3. How do I install sid?
4. Does sid have package foo?
5. Is package foo broken?
6. How do I know what version of package foo I'm using?
7. When will package foo version bar be in sid?
8. But I need package foo version bar right now!
9. Can I use sid packages on stable?
10. Can I use sid packages on testing?
11. How do I backport a sid package to testing or stable?
12. Aren't there already backports...?
13. Should I use sid on my server?
14. Should I use sid on my desktop?
15. Does sid have security updates?
16. When is sid going to be released?