[prestia]

I'm hesitant to open this can of worms, but you are correct in thinking that 4chan is simply and imageboard. The DDoS attacks on MasterCard were actually launched by a group called Anonymous, which is often associated with 4chan. However, 4chan and Anonymous are completely separate entities and their names should not be used interchangeably.

[CalvinHobbes]

so the media saying it was launched be 4Chan is actually incorrect.

[zephjc]

Users on 4chan are by default anonymous when posting content or comments (replies to content). At least when I last spent time there (in early 2007) it was considered a faux pas to post content with a username as it is looked as if one is trying to gain notoriety/fame for themselves, instead of giving up their content for the great good that is Anonymous.

Anonymous (capitalized) is, generally speaking, not a coherent group in any sense, but a meme describing the swarm of memes and the users who propagate them (often first at 4chan) through the internet (a meta-meme?).

[x0ner]

The media understand nothing about that part of the Internet.

[moge]

First rule of fight club...