I use Google Analytics for my web sites, you might use Mint or something else bespoke, but if you're using JavaScript to track those stats (as Google does), you're not capturing how many users you have that don't have JavaScript installed.
The Sitecore Social Connected module contains several independent tools:
Social Connector allows website visitors to log in your website using credentials from their social network accounts. Your website receives more information about the visitor from the social network profile. You can use it to personalize the website.
Social Publishing allows posting automatic updates to the social networks along with publishing Sitecore items.
Putting Like and Tweet buttons on the webpage. You can put the buttons as Sitecore controls and track users' activity using Sitecore analytics.
GaDotNet is an open source library designed to make it easy to log page views, events and transactions, through code, without using JavaScript or even needing to have a browser.