Hey, I've recently acquired a 9year old domain from a friend, it was given to me free and transferred to my account, it comes up on page one for the keyword I want, however since i put up a blog on it and posted a few articles, its been a while but the information hasn't changed i.e. the info on google.
Also since i started building backlinks to it, it moved to page 2, could backlinks cause the problems? Ive just asked my partner to being building links to it by commenting on related blogs, the blogs are all high pr, with related content, if he builds about 150 could i get in trouble with google ? or would it be fine considering the domain is 9years old ?