On previous occasions mattbib had the great idea of spotlighting a specific Avenger for a particular month through our Avengers fan community (you guys). Throughout the duration of the spotlight anyone could come up with a range of topics related to the super-hero spotlighted for the month, however this time we're doing it with super-villains!
Just vote in the Avengers foe you'd like to see spotlighted and once all votes are tallied whoever gets the most votes get's the spotlight for the following month. In this case the next Super-Villain spotlight will be for the month of July so voting ends July 1st.
As a useful resource, here's CBR's Top 50 Avengers Foes! now go vote Avenger!