A few twitter products I can recommend:

Earn Repeat Commissions for Automated Sales System
Automated Sales System…Anyone using Twitter Is Buying This. Also Creates Automated Commission Checks, Over & Over Again! The Next 7 Minutes will change the way you work online: http://www.myliststrategy.com/affiliates.htm
Earn Repeat Commissions for Automated Sales System

ScreenDASH! Image Software
Amazing image software for capturing images from screen or webcam, tweak the images with drawing & photo retouching tools & clip-art. Share the images online via Facebook, Twitter, Flickr & more! Very high conversion rate from Free to Premium versions.
ScreenDASH! Image Software

Program Hoppers Viral Business System
One or more programs to promote? Advertise everything you have, receive immediate traffic to your listings and earn 50% by suggesting our system to others. Increase your Twitter followers with ease! 15,000+ members and growing. Join now.
Program Hoppers Viral Business System