ViralURL vs Bit.ly

ViralURL is my recommendation for tracking

2 purposes

1. Tracking. "If it is not being measured, it cannot be improved" – W. Edwards Deming

2. Cloaking. Stops unscrupulous marketers from "stealing" your affiliate sales by masking your affiliate ID

Bit.ly is a LIBERIAN domain extension and is blocked by many sites and ISPs