Today I noticed a speaker biography for a forthcoming conference that included the fact the speaker had been using social media tools for 10 years. I didn’t think the bigger networks had been around that long. So, I thought I’d check some launch dates. I was wrong!

The ones I have chosen provide a mix of functions – they all have social functionality built into what they do . . .

1994

1997

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011