Nearly a year ago, PW looked at a handful of indie presses and major imprints to gauge their use of Twitter. The piece showed most imprints had a few thousand followers, and that some savvy indies were more adept at using the social networking service than the big houses. The story ran at a time when the industry was grappling with what exactly to do with -- and on -- "the social networking service. Is it for publicizing books? Cultivating brands? A province for authors? For marketers? And, most importantly, can you actually use it to sell books?