"alliwantforxmasisapsp" was a website sponsored by Sony which was intended to promote their PSP handheld gaming system. The site was a faux blog which was created by a company called Zipatoni, which specializes in "activating consumers." The gaming community became suspicious of the site primarily due to its gratuitous, awkward and often incorrect use of internet slang. The site was taken down shortly after it was definitively outed as a Sony-sponsored advertisement.
Actual text from alliwantforxmasisapsp.com:
"don't just wear it – pwn it!!1!"
"our boy Cousin Pete 'rapped up these crazy beatz and rhymes & put them under our tree! much luv and thx, pete."
"this original "all I want for xmas is a psp" jam is bound to be a cla$$ic!"