File:RationalWikisphere.png

Summary
Made with yED (credit to Sterile for getting the graph started, and introducing me to the program). I release this under CC-by-SA 3.0.

Explanation
Thin lines with a single arrow denote "weak bonds" between websites. To have a weak bond, at least one of the following criteria must be met: In the case of a weak bond, the arrow radiates from the "instigator" site (site X in the above criteria).
 * Enough users from site X cross over to site Y (either to troll or edit productively) to make up an appreciable fraction of site Y's user base.
 * Policies and/or controversy on site Y is shaped by users from site X.

Thick lines with an arrow on both ends denote "strong bonds" between websites. To have a strong bond, both sites must significantly mutually influence each other.