Surprisingly, for me joining the site wasn't hard at all. Maybe it was during the quiet time or something, but when I sent my request/invitation to join, by the next day
(if not sooner) I had my account up. I haven't tried yet sending any invitations myself
(might try it with some friends of mine at some point though) so I don't know if that makes any difference. I think
(until they figure out something better, if there is such) the best way to do that is to simply go through the invitation system and forget the whole thing until you get the email notice. Other than that, I don't really see it as that big deal. Not too long ago there also was some trouble with either spammers or something else, where they had to turn off the entire invitation/joining system.
I originally went there in case ff.net is acting stupid again for one reason or another. Now I'm enjoying AO3 more and more. Both as a writer and reader. The tagging system was at first hard to figure out since I wasn't used to it, but now I'm in love with it
(not counting those authors who add so many tags that I lose all interest by the time I make it to the actual story summary...)
I found out about AO3 through ff.net. At first I had no idea what people were talking about, since they weren't even using the actual name. It took some searching through the search engine, before I found out what on earth they were talking about...
The way I've used the bookmark is by simply clicking it when I want to "favorite" someone's work, when simply giving kudos or comments isn't enough. When you click it, it opens the "
save a bookmark" thing. I usually don't bother going through all that in there and I simply click "
create" and then it can be found through my own profile. It looks though that you can also make it private, add it to some collections, add some tags, write notes/summary etc... I don't know, maybe I'll use this as more than simple favorite system one day.
...Basically, this is useful only if you have account where to save that bookmark.
EDIT: It looks like this:
LINK