This community is for those who beta fanfiction, with a special interest in Harry Potter. Here, you can:
Exchange tips on working with authors, their files, and their egos.
Ask for advice on dealing with specific problems related to beta reading.
Get a second opinion if you're not sure about plot, characterization, or usage.
Post links to online resources that you'd like to share with the group.
Use the cut tag.
Post someone's fic and laugh about it.
Name and complain.
Flame, harrass, malign, etc. There are other places to do that sort of thing.
Post quiz results (unless it's the grammar quiz, ha).
Advertise for a beta reader for your fic. The moderators will be MEEN GIRLZ and delete your post. Really. If you'd like to offer yourself as a beta or search for one, hp_betas is a great resource for that. Also, many sites have beta reader systems; check out your favorite archive.