[Updated (2) below.]
I listed four theories for Sarah Palin's abrupt resignation yesterday afternoon.
The Daily Beast put the total at eleven by early evening.
And, shortly before that, Kausfiles had already tallied fourteen (not counting the Scientology thing).
Methodological issues abound. Kausfiles and The Beast achieve length in part by slicing the baloney pretty thin: Is "fame withdrawal" (#2 at Kausfiles) really separable from "cashing in" (#3)? If you subscribe to "it was a whim" (#6 at The Beast), don't you also have to assume that "she's unstable" (#8)?
I stick to the virtues of my shorter list, but it has its own technical problems, too; as I noted on Facebook, I only tallied the explanations that had been explicitly offered up to that point--any that were too obvious to mention got undersampled.
I call for a Blogger Panel on Bizarre Resignations Methodology.
[Update: The Kenosha Kid offers four possibilities, partly historical, partly inspirational.]
[Update: The Washington Monthly lists seven possible explanations, of which only one--#6--explores new territory.]