If you tried to insert the circuit board of an electronic watch into an old clockwork alarm clock, you could expect an early visit from people in white coats. Any sane person knows that they are completely different kinds of systems.
In much the same way, stigmergy is completely foreign to computer systems. It is a concept that comes from biological systems. It cannot be used in the same way as you can use an algorithm in a computer program.
The highlighted links on the left have been chosen to provide an insight into the kind of biological system thinking needed when applying stigmergy to Web based applications. They may not save you from the people in white coats, but they'll save you from much frustration and wasted effort as you try to marry up computer technology with biological strategies.