Anonymous is planning to bring down the internet. March 31.

That article also postulates that the notice could have been posted by someone pretending to be a member of Anonymous, trying to troll the world.

Eh, I wouldn't even worry about it at this point.

Even if it was actually a true Anonymous plan when that pastebin post was originally created, it was probably abandoned the second it was posted. It's stupid to post exactly what you're going to do, a month in advance, and then actually attempt to do it.

It is possible they actually are planning something, but something else, and it's all just distractions, but I wouldn't hold my breath. Chances are they have a leak, and abandon any plan that happens to show up on sites like pastebin for obvious reasons. If they actually are going to do something, we won't hear about it until after they've started, or MAYBE a few hours before, but definitely not in this kind of detail.

Of course, since it's not the 31st yet, I could be wrong, but I highly doubt it.