ListDotCom is another email service created by Mike Filsiame, that should help you build a list of opt-in subscribers.  It works off of the pyramid multi-level marketing scheme that involves downlines.  The main thing about ListDotCom is that you can mail to the people you referred and also be able to mail to the people they refer.

What ListDotCom offers is similiar to a safelist, which is a number of people that have agreed to receive emails at the same time.  ListDotCom has a downline structure where you can mail up to 20 levels deep.

Although free, there is that one-time upgrade offer that pops up for you to head into the diamond arena, this allows you to email 5000 people every 2 days and the newly created pro category where you can email 1000 random members every day.

The reason why I would recommend ListDotCom after being a dissatisfied customer with his YourAdBlaster progam is that at the free level there are quite a few free bonuses to be had.   Some of them are good, so there is a good reason to join as a free member.