I just took a look at the webwise opt-out provision...
- The opt-out procedure misleads those wishing to opt-out if they have scripting disabled. The web page text suggests the opt-out was successful when in fact the webwise site only attempts to set the cookie using javascript (which the user has disabled).
- The cookie currently only has a default lifetime of 730 days, after which ISP subscribers would have to "opt-out" again.
- The cookie is called userType and stores a value field of either 'BT User', 'TalkTalk User' or 'Virgin User'. I'm unclear on this... but why store this unless the opt-out is per ISP? What about those who take a laptop between subscribers; tentatively living together as a couple, children of divorced/separated parents etc..?
There's also a test domain of thelathe.com, they're a web development firm in NY -- I assume they wrote the code.