I really dislike logging in or registering with a site in order to leave a comment.
If they don’t collect and sell email addresses and the other information they gather from you… there is still the lovely newsletter they will assume you want sent to your email inbox, regularly. Even if they say they do not sell or give away your information, that doesn’t mean they don’t.
Registering for a site also means, not only do they now have my email address but in their database they also have my standard password, the one I try to use almost everywhere, for every site and online service. Don’t think that sort of information is not being kept track of by someone, somewhere. I am so fed up with registering and logging in for sites I am going to begin deleting my accounts at any site I go to. (Other than those I really do use daily).
The really interesting thing, is how damned hard you have to look to find a way to delete those accounts. In some cases I have to email for help – assuming I can find any contact information. But, never fear, Twitter is here. If you can not get a site to remove you from the database send an aggressive yet polite note to them on Twitter. That way a lot of people will read it and be aware of the problem. You may never hear anything back from the site. I would say I only get any help deleting my account half the time.
The real solution is to be careful and ultra conservative when it comes to registering for anything on any site. Just say NO!