I have a web site which traffic increase about 200% every month. I do usual techniques that i got from suggestions in seo forums (directory submission, forum signature, commenting on blogs). On last 22 Dec, my traffic drop to only 10%... I Used to update the content daily but during the last week before it happened, I was extremely busy so I was not able to update the content. I wonder if it is penalty from SE (google) or because long holiday since it's almost christmas and new year. some friends of mine that my traffic is not normal since the "increase is too much". I asked them about it but they give no clear answers. I would like to have your opinion about this if any please... Thanks in advance
mass commenting in blogs can lead to a penalty, links from non related forum signatures can also hurt rankings, keep updating your content and get few high quality links from some authority sites related to ur niche.