[shobhitverma]

This is pretty interesting. So I can theoretically bring down a competitor's rank by creating spammy websites and providing unnatural backlinks ? Even if the competitors figure it out from the webmaster tools, they will have no way to remove the backlinks. Right ?

[momokatte]

Backlinks can be disavowed via Webmaster Tools.

https://support.google.com/webmasters/answer/2648487

Related:

http://searchenginewatch.com/article/2309486/Matt-Cutts-Use-...