Los Angeles-based Tender Greens uses its Twitter page to advertise specials; it also kept San Diego followers up to date on its restaurant opening in that city.

Twitter enables users to write 140-character microblogs as many times a day as they please, which in turns enables their friends to keep constant track of them. Like Facebook, the site is free. Unlike Facebook, Twitter users can connect with, or follow, whomever they want; no permission is necessary. Generally speaking, new users choose to follow current users in hopes that the favor will be returned.

Erik Oberholtzer, chef and co-owner of Tender Greens, a three-unit, fast-casual, health-skewed restaurant chain based in Los Angeles, began "tweeting" earlier this year after some prompting from his publicist.

"Honestly, the microblog culture was not something we understood right away," Oberholtzer says. "The perception was that it was a lot of people sharing a lot of useless information." He no longer feels that way. "The benefit is getting a message out there and building a community," he says.

Right now Twitter is a corporate venture for Tender Greens. As the chain expands, each store will have its own Twitter voice, says Erik Oberholtzer, chef and co-owner.

Oberholtzer also wrote about construction updates on the chain's West Hollywood location, which opened at the end of March. The store opening had been delayed due to a permitting snafu: "We didn't know until 5 p.m. if we were going to open or not," Oberholtzer says. The store ended up opening the next day, "and Twitter was the best way to get that out," he says.

Tender Greens' publicist initially built the chain's Twitter list by choosing to follow food bloggers, writers and other interested parties in the Los Angeles area.

Dallas-based Maggiano's discovered another way to build a following, and fast.

The chain began tweeting in early March after Michael Breed, senior marketing manager, found multiple mentions of Maggiano's during Twitter searches. "We thought it might be a good way to engage guests," Breed says. Within a week of launching its Twitter presence, Maggiano's had 130 followers.

The Dallas-based restaurant chain, which has 45 locations, got a big boost after launching a Twitter contest that offered $100 gift certificates to two winners. Maggiano's sent the following message: "Follow @Maggianos by 5pm CST to be entered to win $100 in Maggiano's gift certificates."

By the end of that day, Breed says, Maggiano's had 2,000 Twitter followers. Winners of the gift certificates were chosen at random from the followers.

In the near future, Maggiano's will use Twitter to tell guests about menu specials, contests and promotions. Until then, guest engagement is one of the most valuable benefits of Twitter.

"Keeping them engaged, developing a personal connection with the guest—that's the biggest aspect," Breed says.

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