Yeah, or.....
"Around half of small businesses are using social media, but many do not find it useful, according to research by a small firms trade body."
You could also say, about half of small businesses have been sold "social media" as a means to reach their customer base by "media and marketing companies" that have jumped at the opportunity to make a quick buck by setting up a twitter account and doing a facebook page for a few hundred quid. However, generally speaking, when people are thinking of buying a fireplace or a new bathroom, they don't give a fuck about following the company on twitter or being their friend on facebook.