What are the technical differences between Tumblr and Posterous? I'm looking for things like uptime, community features (like, follow), reblogging, editing options (EG, Markdown availability), customisability, comment system, etc.
notes:
- There is a similar Question, but was different in that it was asking for a recommendation.
- Feel free to add a link if such a blow-by-blow comparison has been done somewhere else.
