Do list builders help in SEO?

I have been involved in various list building sites like Adz-2-Cash and CashTextAds, which they advertise their sites to many members in a list building site. The functions of list building when it comes to SEO is that every time you post an ad with the desired URL, it will automatically e-mail all members within a list building site with your advertisement, and they can be viewed through e-mail or within the program.

You can post text ads, HTML ads, solo ads, banners and anything that you would like to advertise. I think you can earn points or credits to advertise your site for SEO purposes. It's a good thing that when you join a list building site, and viewing some of their advertisements, you have discovered another source of opportunity.