I've never paid for an ad/article before, and I know Matt Cutts is complaining about it, but it's mostly spammy sites. I found a few news sites that have 60+DA that offer "sponsored articles". The article will say "sponsored article" on it. But I'm allowed to use anchor text and my link. Should I have any concern with this type of ad? I'm creatinga money site that I want as clean as possible, don't want any reason to get penalized.