As with any marketing campaign, you should monitor your Twitter promotional campaigns by tracking the results. One free way to do this is to use http://search.twitter.com/ to find all instances of people talking about you or your business on Twitter.
Another tool you can use is called Tweet Beep: http://tweetbeep.com/. This service will automatically email you whenever something about you or your business is Tweeted.
Finally, you can check your website’s analytics/traffic statistics program to determine how much traffic you have received from Twitter. If you don’t currently have a good traffic statistics program, you can get one for free from here: http://www.statcounter.com/.



