A new study by Jupiter Research has discovered that micro-business executives - those working at a company with fewer than five employees - are among the heaviest internet users, ClickZ writes.

The survey of 449 micro-business executives found that micro-biz executives spend 17 hours a week online, compared with 15 hours a week for all internet users. Jupiter also reports that such executives spend more time online than they do watching television (14 hours per week).

The results of the survey have implications for advertisers. "Micro-business executives are highly engaged online users and great candidates for behavioral and contextual targeting" said Sonal Gandhi, JupiterResearch Analyst and lead author of the report. "They are more likely to respond to this type of targeting than the average online user and are otherwise hard to target online."

David Schatsky, President of JupiterKagan, also suggests that marketers create online community sites to attract micro-biz execs, since the study shows that such users are likely to engage with marketers online.