I've also taken to manually mirroring WIST on Google Plus at +WIST – Wish I'd Said That, in case that's easier for some to keep track of. It doesn't have the corpus of existing quotes that the blog version has, but for those with no time to read anything other than their G+ stream, it's another way of doing it.
WIST – Wish I’d Said That!
A personal collection of quotations I find meaningful, moving, amusing (intended or not), well-phrased, and/or to which I just say I “Wish I’d Said That.”