privileged account

i was browsing then came across alot of pics that said i needed to be privileged to see.
i don't think it was loli though

"shota" is another such tag. But if you can't say what the image was, you're wasting our time.

Just visit one of the Danbooru clones, like Gelbooru, to see the hidden images.

Try these:

http://gelbooru.com/index.php?page=post&s=list&tags=loli
http://gelbooru.com/index.php?page=post&s=list&tags=shota

how many *booru's and .donmai's are there? and which *booru is the top one?

Danbooru is the original *booru run by the engine's author.

Donmai.us is the domain Albert uses for his sites, so I'm not quite sure what you are referring to as far as that goes. There used to be a miezaru.donmai.us, but that was just Danbooru under a different name for when it closed to the public a year or so ago.

There is an 'overbooru' which lists a lot of other sites using the danbooru and similar engines:
http://pinochan.net/overbooru/