Twitter purists may label me a blasphemer but as a marketer I can’t ignore the market testing opportunities that twitter provides.
Obviously, you can use Twitter to listen to the conversations of your market - what’s hot, challenges, frustrations, excitement, and news.
I also use Twitter to test headlines and time-of-day for broadcasts.
Headlines: somewhere I read that the most responsive headlines are between 80-131 characters. Whether it’s true or not, it fits into Twitter’s fixed 140 character limit.
Using tweetburner you can create a redirect-tracking link for your webpages. The nice thing is that it tracks across all twitter aggregators, too.
Broadcast timing: I’ve also found that my market is active at their PC between 3pm and 6pm Pacific.
I tracked this by sending out the same tweet at varying times of day. The winner was always in that time frame.
Now I know when I should be sending my emails, too.
So, most definitely use Twitter to get involved with your market community but look beyond that and use it as a test bed. Besides, it couldn’t be any easier.

Great suggestion, Mark. I have to admit; I love the drama that went down over John Reese’s use of Twitter as a promotional tool. But come on - the very nature of Twitter keeps the spammers at bay, so it’s hard to criticize its marketing value — whether for testing, promotion or just relationship-building.
Comment by Kelly on 14 Jul 2008