Jeremy,
As a biased, but unadulterated figure in social media, I will be able to provide a few solid reasons why Twitter matters, even for 'the rest of us' who don't dabble in social media or customer service.
1. Personal Branding. A great asset to help become transparent and recognized for your views and the ability to being 'plugged in' is so valuable. Now, at the tender age of 24, I know there are kids at 17 who are making a name for themselves in a way I can't. Likewise, there are older folks in my field who carve out the ideologies in social media.
2. Customer Experience. I know automation is all the rage here, but seriously, is it that hard to say thanks? When a customer shows their loyalty, a small business ought to show their gratitude. Further, if a customer has a question, Twitter minimizes most customer support barriers. Even if you have a ticketing system, quick Twitter updates can deflect common/urgent matters.
3. Live, Instant News. I am (on many occasions) the source of breaking news in the office because follow 12 different news agencies as well as independent reporters and journalists. Does it mean I read every piece of news, nope, it's a wire of buzzing information and when I see something useful, it's there.
4. Your customers are on Twitter. Customers seek Twitter to learn the community opinions on a company or product. While as simple as a Tweet or two, you can quickly give updates, status, changes in support, changes in expectations over Twitter and customers will enjoy it. As Steve points out above, prospects are on Twitter and WILL deliver ROI over a long-term, relationship business. At Infusionsoft, I can attest that Twitter has resulted in several thousand dollars recurring revenue. All free.
I hope this helps. If you're interested in a free social media consultation to see how it might fit for your business, let me know. I'm here for you, Jeremy.
You can follow me on Twitter at
http://twitter.com/JoeManna/ and to see how the company (mostly, me) Tweets for business, follow Infusionsoft at
http://twitter.com/Infusionsoft/ .
~Joe