ShareBloc is building a platform for professionals to share, curate and discuss business content that matters, like a Reddit for professionals. We're starting with sales & marketing professionals but can scale to anyone with a LinkedIn account. We plan on launching additional communities based on job function (e.g., accounting), industry (e.g., real estate) and geography (e.g., UK). Our users visit our site daily (some multiple times a day) and we have a 30% email open rate for our daily and weekly emails.
In our first three months of open beta, we've acquired thousands of professionals on our platform, including executives at HubSpot, Marketo, Salesforce, Infusionsoft and many others. We've have developed commercial relationships with leading marketing companies, including many sponsors of Marketo's upcoming annual conference: http://www.sharebloc.com/content_marketing_nation.