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new product: SchmartBoards - easy to solder Surface Mount prototyping break-out boards, even .4mm pitch, QFN and BGA.
Curious Inventor - Store: .1 Inch Header Pins (Single Row)
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in stock - price: $0.25
.1 Inch Header Pins (Single Row)
Headers

short description:

20-pin breakaway header pins let you snap off just what you need. Gold Plated.

more information and instructions:

Dimensions: long side: .24" long, short side: .125" long. .025" square. Plastic is .1" on all sides (if just one is broken off).

An example in use is pictured below: