Public Data Sets on AWS provides a centralized repository of public data sets that can be seamlessly integrated into AWS cloud-based applications. Includes Genomes Project, Google Book Ngrams; NASA datasets etc. etc.
List of sites that will pay you for answering questions and giving advice in some form. Out of all of these I've only ever worked for ChaCha. That was back in 2010 when they're pay was decent and they had plenty of work.