Why?

S24Os: Bicycle camping for the time challenged - Grant Petersen, founder of Rivendell Bicycle Works, shares his thoughts on why short overnight tours are easy and fun in this 2007 Adventure Cyclist article. (Grant originally coined the term "S24O" or Sub-24 Hour Overnight)

Bike Camping: The best of both worlds by Steve Jones on GORP.com
A few years ago I never would have considered it, but more and more I'm finding reasons to head out into the woods, panniers hung and trailer in tow, where I will stay a night or two, stretching the day's ride on both ends of twilight.