LinkedIn has a user base of 347 million, with significant engagement as 2 new members join every second and 200 group conversations occur each minute. The platform is predominantly used by B2B marketers, with 94% utilizing it for content distribution and 62% finding it effective, while also hosting 2 million active job listings. Its revenue in Q4 2014 was largely derived from talent solutions, marketing solutions, and premium subscriptions, highlighting its important role in professional networking.