Everybody helps write Wikipedia from the Richmond Times Dispatch is a nice overview on how Wikipedia is assembled by a community, a strength in that good information can get out quickly but a weakness in that allowing anyone to change it leads to accuracy and legitimacy issues. I was just over there today
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.