Four Fallout 3 Perks Identified

Kotaku Australia brings us brief descriptions of four of the perks currently available in the press build of Fallout 3. These are obviously subject to change, but here they are anyway:
Photography was not allowed during the presentation, but I did jot down what I saw:

Old perks

Bloody mess: Pete himself comfirmed that this perk was in. In addition to increased gore, this perk will provide a small damage bonus, making it better than the original.

Swift Learner: This perk functions the same as it did in previous games. For each rank of Swift Learner you take, the player will receive 5% extra experience.

New perk (yes, just the one):

Lead Belly: This perk, which can be taken multiple times, reduces the amount of damage you take from radiation when you drink water from a contaminated source (such as a toilet in an abandoned subway) by 5% per rank.

And one more (plus a console cheat code):
Going through my notes, I realised I missed one! Called Strong Back, it allows you to carry an extra 100 pounds of equipment. Again, it's an oldie from the previous games, altered to suit the mechanics of the new title.