To snark: to use sarcasm or malice in speech. Commonly found in the LiveJournal community. also snarky, snarkiness.
To fisk: to undertake a point-by-point refutation of a blog entry or (especially) news story. A really stylish fisking is witty, logical, sarcastic and ruthlessly factual.
To snisk; to snark while fisking, or fisk while snarking.
David Roberts of “Grist” has just done a total snisking (as in “snisking someone alive”) of some NYT hack. He demolishes the guy piece-by-piece, and does it in such an entertaining tone of voice that you will want to read it twice. Truly a thing of beauty.
(Hat-tip to Sam for the pointer to the Roberts piece.)