Anyone know how exactly Capture the flag works?

Some pictures:

 Spoiler

You can use teleport, flash jump and all the skills you can use in regular pvp.
First impressions:
- The only defense is good offense. Thieves flash jump too fast for you to prevent them from grabbing your flag. So just grab theirs first.
- You need at least some teamwork. There needs to be some people protecting the flag runner and some people killing the opposite teams flag runner.
- BP/EXP kinda sucks which is a good thing in my book. There'll be less hackers. =)