swguy:
I have not done this, and wouldn't recommend it. Most people would call that kind of unsolicited email "spam."
I disagree <sort of>, depending on the verbage within the email, the frequency, etc.
Go search around on amazon or Tiger Direct for a few different items, you will get a very targeted email within a day or two from them (if you are customer).
I think it is in the same vein as trying to recover from shopping cart abandonment, hey we noticed you added something to your cart, blah blah blah. One time, don't pester/spam them, etc. Its just a gentle reminder. Currently have over 10% abandoned cart recovery and the recipients don't seem to mind, in addition I have received great feedback due to what is contained in the email. ie shipping was too high, found it cheaper, etc. etc. and it allows me to adjust certain products as needed, if possible.
I have seen this 'feature' over used though. One site sent me an email about an item in my cart about every other day for a month. (they did not have a 'wishlist' feature) Annoyed me enough to purge my cart and NOT purchase from them.