Comment on WordPress Hacks by Gabor.
Thanks for the info, I checked out Aweber. It’s really cool service, I strongly recommend any one who wants to build a list. They have great tools to build opt-in pages too. I did and put it on my Wp Talian site. Works great! One more way to keep in touch with people who visited your site :)
Here is a detailed video I found on youtube how to create opt-in with Aweber:
Have fun and lots of subscribers! :)