EQUTE — Twitter said it will soon offer big brands premium accounts that include enhanced features and analytics tools.

The announcement comes after many big brands jumped to be a part of Twitter analytics services and other news that Fortune 100 companies really didn’t use Twitter much.

A Weber Shandwick study shows that Fortune 100 companies are lagging far behind 15-year-old girls when it comes to Twitter.

The Weber Shandwick study showed that 73 percent of Fortune 100 companies registered a total of 540 Twitter accounts. However, about three-quarters (76 percent) of those accounts did not post tweets very often, and more than half (52 percent) were not actively engaged.(This was measured by engagement metrics such as numbers of links, hashtags, references and retweets.)

In addition, 50 percent of the Fortune 100 accounts had fewer than 500 followers, a small number in relation to the size and reach of a major corporation. Another 15 percent were inactive; of those, 11 percent were merely placeholder accounts — unused accounts to protect corporate names against so-called brand-jacking on Twitter — and 4 percent were abandoned after being used for a specific event.

In response, Biz Stone said that the site would charge for the new premium accounts.

“We want to present to [businesses] a layer of features to help make them better at Twitter, and share some of the analytics,” he said.