datasets

Here are a bunch of datasets in one place

http://rs.io/2014/05/29/list-of-data-sets.html

http://www.google.com/publicdata/directory

http://infochimps.com

http://www.delicious.com/jbaldwinconnect/DataSets

http://aws.amazon.com/publicdatasets/

http://www.kdnuggets.com/datasets/

http://www.delicious.com/pskomoroch/dataset+redistributable

http://data.nsw.gov.au

http://data.worldbank.org/