A source has confirmed to us a coming shakeup at IAC-owned Ask.com that includes about 100 layoffs in the April time frame. SAI reported this morning that the site may pull the plug on its own search efforts, and instead power itself with Google (NSDQ: GOOG) search, a la AOL. We’ve learned that as part of the ad deal between IAC (NSDQ: IACI) and Google, which the parties re-upped in November, there’s a clause allowing Google to engage more deeply with Ask’s algorithmic search. A decision to go with Google completely for search hasn’t been decided on definitively, but something along these lines may occur.