Each post on Short Form Blog is a single entry, and I agree with Robin, they are “almost info-visual tweets.” Stop by for bite-sized nuggets of information, easily digestible and certainly worthy of a conversation starter.
Longform is a different beast altogether. It aggregates some of the best long-form journalism from around the web into one tidy place. Oddly, you can follow the latest updates on Twitter. I guess that would be ironically, more than oddly.