If you're looking to list building capabilities, the vast majority of people prefer aweber. It does cost money though.
It is far better having 500 people on your list that you have built from your site (with people giving you their details after reading your content) than having a list of 1000(which is twice as many) people who do not have any interest in what you have to offer. At the end of the day you might make 100 sales from your small list and maybe 10 from your big list. Which is better?
i found a site with 100's or even 1000's of email addresses posted in the open but just scattered accross 1000's of topics and i need a fast way of harvesting them lol