1. I am curious how it works and what are the current costs 2. I have a competitor link in Google I would like to kill with Google Bombing filter I would love to get in contact with the owners, not 3rd parties
try gsa ranker software. However, google not stupid to allow such negative seo, and most likely your actions will invisible (i mean site rank in google) for attacked site owner (except list of new backlinks). So, that owner (after contacting spammed sites), can get your ip and start legal action against you.