If you’ve picked up a cell phone in the last 24 hours, then you’re a potential segment to be tapped by mobile marketing. Studies such as a survey by M-Metrics suggest that SMS response rates are in excess of 15%. That means when customers are texting, if clients are talking, there’s an opportunity to gain new business.

Unlike traditional mediums, the most important thing to remember about mobile marketing is this: it’s not a single market channel. There’s a whole micro-universe of utilities and mediums tied in with the mobile world. Here are a few methods to plug into this opportunity-to-be.

Direct texting. Also known as SMS, this field aims to gain customers by sending out a bulk text messages to consumers. The challenge, of course, is advertising responsibly. The best way to achieve a nice response rate is messaging only to customers who express an interest in your organization, or who indicate a wish to be alerted with job openings, contests, or any special promotions you offer.

Gaming. Once only a niche market for Tetris-heads to get their fix, gaming on mobile communication devices has gone mainstream. With the advent of the iPhone, and now the hot-off-the-shelves iPad, the casual consumer has opened up to mobile gaming. Advertising opportunities within these markets include specialty games themed off a company itself (Pizza Hut’s “Pizza Builder”), or advertisements placed cleverly within the virtual world (games like MapleStory and derivatives).

Viral video. Whether you’ve developed a catchy commercial or something bizarre enough to spread like wildfire, a mobile medium could work wonders. Thanks to generous storage capacities on new mobile phone devices, videos can be sent and stored entirely on individual devices—meaning there’s plenty of room to spread the next big viral wonder.