For a novice link builder, link building can cause a kinds of problems. The worst is that of being penalized. This is a lesson for those starting out not to do.
As I mentioned in an earlier post about natural link building, committing any of the three link taboos: too many links, excessive repetition of the same link text, or being part of a link network, can draw undue attention from the search engines. In this case, the site owner got link-happy and built too many links in a very short period of time (7000 in less than 2 months!) plus participated in a link network called GotLinks. Having any one of the three taboos will undoubtedly get a site in trouble and the site owner committed two of them.