Be-a-magpie.com is an advertising service which automatically inserts ads into users' Twitter streams.Marketing Pilgrim: Be-A-Magpie Brings Advertising to Twitter (November 24, 2008) Advertisers create a customized message using keywords and bid for the advertising campaign attached to these keywords. Magpie then analyzes users' Twitter streams and inserts ads into the streams that contain matching keywords.Be-A-Magpie.com: How it Works
Quotes
"Somehow the owners of everything from Facebook to Twitter to YouTube are going to have to find ways of monetising them more effectively. But turning social users into online billboards sounds a surefire way of losing their custom - so you won't be finding any Magpie ads in my twitterstream."—Rory Cellan-Jones, technology blogger for BBCdot.life (BBC News): Magpie - touting your Tweets (November 24, 2008)
"I imagine anyone who starts to use this will see a sudden decline in followers rather quickly."—Michael ArringtonTechCrunch: Be-A-Magpie Is PayPerPost For Twitter (November 23, 2008)