I have absolutely no experience in editing.
Take a look at http://lesswrong.com/lw/jc7/karma_awards_for_proofreaders_of_the_less_wrong/ for more information. Alex Vermeer seems to be responsible for the project and hopes that there a book by the end of the year.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.