Bartering for things you need?

Trash often barters for things with neighbors, cohorts, etc using things that we have acquired and arent using. I have been doing this for 30 years plus.
Apparently the movement is growing..

Here are 3 links to stories appearing just today.

Making no cash deals with neighbors

shaky economy forces people to rediscover community

Bartering-- a post from Farmer Dervaes