I work with B2B companies and I can confidently say that outside of LinkedIn, there is little to no value in maintaining an active presence on Twitter/Facebook/Pinterest/Instagram in most B2B segments
LI is a self-updating rolodex, has killed business cards. Invaluable to keep track of where people move.
Our sales people would hate for LI to go away. Happily pay themselves for Sales Edition.
You just convinced me to go kill my LinkedIn account from whenever ago.
Most B2B companies are pretty hard to get any relevant information out of.
A company that actively creates and shares interesting content on HN will have a much better brand image than one that does the same on Twitter. HN's smaller, self-selected audience will also land you better quality leads with less noise as compared to a large social platform