http://dictionary.cambridge.org/define.asp?key=102313&dict=CALD
Definition
snarky
[Show phonetics]
adjective INFORMAL
criticizing someone in an annoyed way and trying to hurt their feelings:
example: There was some idiot at the back of the hall making snarky comments.
Also Dug this up..
<SPAN class=artcopy><SPAN>The Snark was an air force program begun in 1945 to produce a subsonic (600-mile-per-hour) cruise missile capable of delivering a 2,000-pound atomic or conventional warhead to a range of 5,000 miles, with a CEP of less than 1.75 miles. Initially, the Snark used a turbojet engine and an inertial navigation system, with a complementary stellar navigation monitor to provide intercontinental range. ?</SPAN></SPAN>
<SPAN class=artcopy>And this at Dictionary.com</SPAN>
<SPAN class=artcopy>Snark</SPAN>
<SPAN class=artcopy>[Lewis Carroll, via the Michigan Terminal System] 1. A system
failure. When a user's process bombed, the operator would get
the message "Help, Help, Snark in MTS!"</SPAN>
<SPAN class=artcopy>2. More generally, any kind of unexplained or threatening
event on a computer (especially if it might be a boojum).
Often used to refer to an event or a log file entry that might
indicate an attempted security violation. See snivitz.</SPAN>
<SPAN class=artcopy>3. UUCP name of snark.thyrsus.com, home site of the Hacker
Jargon File versions 2.
..</SPAN>
<SPAN class=artcopy>[Jargon File]</SPAN>
<SPAN class=artcopy>Source: The Free On-line Dictionary of Computing, ? 1993-2004 Denis Howe </SPAN>