Today i purchased a site that has a true pr of 4. But upon further investigation on archives.org it seems to be a forum about something, all in arabic language(a .com domain and been around for 5 years having 18k pages). Now to anyone who had an experience over this, I want to turn this into an english site full of articles(article site targeting amazon or adsense) and my question is there an effect in rankings based on its past history? I am just curious if I could rank for English keywords(low competition keywords) even if it must have been previously ranking for arabic terms. I would like to hear from your thoughts.