It could be really useful to have the ability to create LinkedIn streams for monitoring and reporting around particular keywords or hashtags.
This could be a really valuable tool for social managers, particularly those focusing businesses on a particular sector, as it could help them identify which hashtags are generating the most engagement, and where to focus their client's strategy.
Why does Hubspot stop only at Twitter streams?? It doesn't make sense to ignore the 3 other networks which you are supporting; Facebook, Instagram & Linkedin.
I 100% agree it would be nice but I think this has to due with limitations of the Facebook/Instagram and LinkedIn APIs, not lack of development effort from HubSpot. But maybe they will reply with there is a possiblity of adding this in the future...I think LI opened some additional capabilities on their API but I'm not sure if hashtag tracking was one of them.