Izea & PayPerPost
IZEA's PayPerPost offered payment for in exchange for content creation, specifically sponsored blog posts that would often require video or photo creation. Later, when the marketplace grew, sponsorship offers extended to posts on social media.
IZEA required blogs to be active, high quality in that blogs had to add well written, on-topic non-paid posts of a 2:1 ratio to sponsored posts. IZEA also required blogs draw good amounts of traffic as well as rank highly with search engines.