A Similar Or Modification For This Twitter Script?

Hi all,

Would like to seek some programming advice for a twitter script that seems to be used by many nowadays.

Site like twitterlistbuilder.c0m or like sampleaddress.c0m are using a modified script from Viraltweet.c0m to let you mass follow a list of people. E.g. Viraltweet.c0m only allow you to follow 1. The above two let you follow up to 6.

For those who have ViralTweet script and good with php programming, how can you modify the script to do mass following?

Thanks!