Rather than having to go through social share accounts, and posting to a group of friends, how about a simple link to quickly share a web URL with specific friends, saving the hassle of copying the link, switching to email, creating an email, etc.? Instead, just a simple button to click and a drop-down menu of which friend to send it off to, with a subject line of "A Firefox link sent to you from ___"
Would save SO much time...