I run several blogs and websites.
Lately, I have been getting more and more emails volunteering to write content for me -- many of which comes from agencies/SEOs. Some even say they'll pay me to post the content of their clients (with a few even going as far to say that the payment is dependent on the visibility of the content).
In exchange, they want a live dofollow link mostly from within the article (or at least in the author's bio).
I know this is article marketing's next level, where the author/their reps pitch a seemingly original content to other sites and link from them.
How do you deal with this type of content offering? Do you allow to get paid to post other people's content on your site? Or is that going over to the dark side where Google is concerned?