Finally an idea that is worth it's weight in gold - disposable email.   Have you ever been to a website where you were filling out a form and had an uneasy feeling that if you put your normal email address in the form you'd be flooded with spam?  I know I have.  Usually I'd just give them one of the free emails that I didn't use all the time like Hotmail or Yahoo Mail and sure enough I'd have hundreds of emails the next day.  The problem is that you still need to get some important emails at the same address and now those are mixed in with tons of spam.

Well now you can create a new email account to give out for each website you're unsure about.  The product is called Nyms (by Anonymizer) and it's really great.  Say you go to www.getyourfreeipod123.us (fake website but you get the idea) and you're intrigued by the idea but are pretty sure that you'll be spammed forever more if you are crazy enough to give out your real email.  Well, all you do is create a Nym called something like getyourfreeipod123@nyms.net and have the service forward stuff sent to it to your real email address.  When you start getting flooded with spam from this address then just turn that specific Nym off!  No more spam!  Each email that comes from a Nym tells you which Nym was emailed.   The key is to name your Nym something that will let you know where you used it so you can be sure not to use that site again. 

The smart thing to do is to make one Nym for each site that you are unsure about and that way if only one of the sites is bad you can just turn that Nym off and keep the others on.