Build a loyal, steady customer-base
“BUILD A LIST!” As a marketer, I'm sure you've heard this many times over. Building a list is one of the most vital steps you can take in the advancement of your online business. Twitter is pretty much the same as building a list – although it might be even more effective in the long run.
When it comes to an email list, a large portion of your subscribers won't even glance at the emails you send. Their eyes will glaze over and they may even send it to the trash.
With Twitter, your followers will see all of your Tweets. They'll digest its information in about half a second and if you include a link, they probably won't get offended.
Chances are, if you included an eye-catching description, they'll probably click it!
Additionally, it won't SEEM like you are marketing to them, because you're just another Twitter user tweeting about random stuff!