Tinyboard (the software these boards run on) is heavily inspired upon 4chan's custom Futaba Channel "2chan" based software.
Why did I choose Tinyboard with the default layout ? Because I know people are already comfortable in using 4chan or other Futaba-style boards. Timestamped messages around organized threads, anonymous by default, and ability to attach a picture.
A good tool when comments in the blog aren't enough :)