i am using it and its very good in driving traffic if you know how to use and promote it properly! just a tip to avoid facebook bots configure your viral script settings, disable all that is against faceboo TOS then add policy on the script, then thats it and your good in blasting traffic.
there are diferent kind of viral scripts fron post 3 times on facebook html to full blown wall posting emailing and page controling apps that are powerfull viral tools but you need to know what your doing and have plenty of pva accounts lined up to take over from each account you get deleted if you are out to make serious money then expect a game of cat and mouse as you create apps and pages and facebook deletes/bans em but $1000 days are becoming more and more a frequent happening lately on cpalead chat shout outs