Post length in characters on the x-axis, number of posts on the y-axis.
Daily Activity
Number of posts versus time of day
Who replies to who
Arcs are clockwise, so an arc from a to
b indicates that b responded to a. Every arc is coloured
to match the person that responded, so in the previous example that arc would
be coloured according to b. Furthermore, when hovering over someone all
his responses light up.