Okay, once in a while I check my competitors websites for backlinks, developments, SE results, serps etc. Now I found a strange thing is going on with his "backlinks." If I do a search in google with his domain name (http://www.google.com/search?hl=en&q=www.domain.com) first (for more than 1 year) I saw approximately 600 results. These are not backlinks but just results with his domain name. Suddenly last 3 weeks the amout of results climbed from 600 to more than 12.000 I see also that he is using www.link-back.net/page-rank/ Maybe the increase has to do sth with this link-back.net? Who can tell me what is going on?