The idea is good, but what's with the identities they chose? "Personal", "Work", "Banking", "Shopping"? Is "Shopping" supposed to be an euphemism for "Porn"? As far as I can tell, nobody has a "shopping" Twitter account.
People are also paranoid about online shopping sites changing prices based on tracking information. Here are two articles related to this: http://lifehacker.com/5973689/how-web-sites-vary-prices-base... and http://www.wisebread.com/6-ways-to-avoid-sneaky-online-price...