Lu got into the business of selling chemical enhancements via spam. When Google started using CAPTCHAs, it cut into his business. He searched low and high for a solution to his problem. He found it in cheap crowd-sourced labor. Using humans to solve the CAPTCHAs, he can send his spam again.
lu got into the business of selling chemical enhancement ##s via spa ##m . when google started using capt ##cha ##s , it cut into his business . he searched low and high for a solution to his problem . he found it in cheap crowd - sourced labor . using humans to solve the capt ##cha ##s , he can send his spa ##m again .
Using humans to solve the CAPTCHAs, he can send his spam again.