I have some difficulty with interpreting the difference between some of the traffic coming from social media.
What is the difference between these source/mediums:
Some clarification would help me a lot. Thanks in advance!
Facebook
m, mobile, touch: from mobile web client
l, lm: has something to do with external links from Facebook to you. They route through a subdomain to remove personal information from the URL before forwarding to an external domain. You can google link shimming for more info.
apps: Obviously, coming from a facebook app - like games and stuff.
business: From business page.
ads, ads: From various Facebook ads. People might be manually tagging these with GA parameters.
Google
Organic: From Search results
Referral: From Google Plus and Google (groups posts, help articles, etc... from google.com domain)
Mail: from gmail or inbox, probably from an ad?
tpc.googlesyndication.com: Google Doubleclick ad clicks
Twitter
Referral: From normal Twitter.
Social: Just from normal Twitter. It's weird you'd see this in source/medium, though. You probably manually tagged a link with this information. Usually it'd say t.co / referral.
Twitterfeed: A social sharing app that automatically tags links for GA