30 rank loss penalty or -30 ranking filter penalty means that you loose your ranking position by 30 positions. You go back to 30 positions in respect to your current rankings on Google. This 30 rank penalty is recently launched by Google and this technique is basically to combat with spammers who use various spammy techniques to take back links. The general idea is that the webmaster who takes irrelevant and unthematic links from guestbook and blogs become the victim of 30 rank loss penalty.

So if you really don’t want to be part of 30 rank loss penalty, don’t overdo link exchanging with blogs and guestbook signup. It’s not like that you always get penalized for gaining links from blogs and guestbook. But if you overdo the things, you can become the victim of 30 rank loss penalty. These are based on mere speculation and no one is confirmed about the sayings of various penalties discussed. But these are based all on experience which counts the most.

We are sure that you don’t want to be victim of 30 rank loss penalty. So always be ethical and relevant in matter of link building. If you produced quality and relevant back links, you will automatically be on the 1st page of organic rankings. So try to improve out there instead of thinking about some spams techniques, if you always practiced ethical ways, you won’t have to worry about 30 rank loss penalty ever.