A few twitter tools products I can recommend:

The SEO System-High $$$,Subscription-Based,1000 Users=,000 Monthly
Everyone asked and it’s finally available! The SEO System is on CB and provides the most effective, affordable SEO solution for both beginners and experts. Membership product with lifetime recurring revenue. Tools: http://theseosystem.com/affiliates.php
The SEO System-High $$$,Subscription-Based,1000 Users=,000 Monthly