He's been on Reddit for over 3 years:
His IAMA was 11 months ago:
Reddit revolts (2 months ago):
The Oatmeal redirects Reddit traffic:
The Oatmeal comics work again on Reddit. Tubemonster (author of Hyperbole and a Half) defends him:
There you go. More than you ever wanted to know about one of Reddit's many soap operas.
The Oatmeal may get most of their money via Reddit, but I don't think Reddit has a beef with them.
Basically someone working SEO used GiantBatFart (The Oatmeal's Reddit username) as an example of people using SEO on Reddit and Digg. Long story short, The Oatmeal got mad.