Signal to Noise Ratio: In analog and digital communications, signal-to-noise ratio, often written S/N or SNR, is a measure of signal strength relative to background noise. The ratio is usually measured in decibels (dB). From SearchNetworking.com

Signal to Noise Ratio (SNR): The ratio of useful information to useless information in any given statement. From Urban Dictionary.com

“It is impossible to look at the G.O.P.’s behavior in the last four years — from its unwillingness to consider Obama’s jobs bill, which was praised by independent economists, to the unwillingness of its presidential candidates to consider a $1 increase in taxes for $10 of spending cuts, to the time it spent on sheer lunacy such as questioning the president’s birth certificate — and not conclude that many in the party just wanted Obama to fail in the hope that they could pick up the pieces. Too many Republicans, particularly moderate business types, don’t want to admit how much their party has been led around of late, not by traditional conservatives, but by a radical Tea Party base that has driven decent, smart conservatives — like Bob Bennett of Utah, Bob Inglis of South Carolina, Richard Lugar of Indiana and Olympia Snowe of Maine — out of office.” From Our Secret Sauce by Thomas Freidman, NY Times October 23rd, 2012