Meet the recent college grad who tweets for Pizza Hut.

Some companies have gotten the message. Jet Blue's (JBLU) official tweeter is its manager of corporate communications. McDonald's (MCD) leaves its official tweeting to higher-ups as well. Starbucks' (SBUX) Twitter feed isn't manned by an executive but a former barista, who has presumably developed a good sense of what its customers are seeking.

Despite a lack of in-house experience—she worked for only one day in a Pizza Hut restaurant—Robinson seems to be doing a fine job thus far. She has increased Pizza Hut's Twitter followers from 3,000 to more than 13,000 and successfully executed a sales promotion over the Fourth of July weekend. And despite having only been on the job for a month, she seems well-informed about the company offerings. In response to a customer inquiry, she tweeted on Tuesday: "Currently the Stuffed Pizza Rolls are only available with pepperoni. I'll keep you posted if anything changes."

But she might have added this caveat: if anything changes this summer. The twinternship ends come September, at which point the posting duties will presumably change hands once again.