LinkedIn is hoping to unleash more wisdom on its professional networking service by giving its 277 million account holders more space to share their experiences and insights.

A new feature rolling out Wednesday will free LinkedIn users from restrictions that have limited posts to a maximum of 300 characters.

LinkedIn users will now be able to share essay-length musings about their industries or jobs. The lengthier posts will only be displayed within the author's network of LinkedIn connections, but could be distributed to a broader audience if the content is popular with its initial audience.

The option to share lengthier pieces initially will be confined to posting in English.

The expansion is part of LinkedIn Corp.'s efforts to build upon the 10-year-old service's role as a digital Rolodex.