See these interesting posts:
- http://www.workingcogs.com/2007/attention-economy-i-what-is-it/
- http://www.workingcogs.com/2007/attention-economy-ii-today-your-attention-builds-the-implicit-web/
- http://www.workingcogs.com/2007/attention-economy-iii-how-to-start-taking-control-of-your-attention/
- http://www.workingcogs.com/2007/attention-economy-iv-summary/