Just saw Vodafone has announced unmetered facebook and twitter, if you buy a data bundle on PrePaid. Seemed like a good deal, 'till I saw it was only on PrePaid and that you have to buy a bundle. So, its not (to my knowledge) sponsored by the companies (facebook and twitter) unlike the 0.facebook.com on XT.

Quote:
"Grab a Mobile Internet Add-On on Supa Prepay and you'll get nonstop Facebook and Twitter each month until 30 April 2011 without it counting towards your monthly data allowance."

See: http://www.vodafone.co.nz/specials-promos/nonstop/