Many of the questions closed with the reason "obtaining specific datasets" would actually be good questions for Cross Validated's new little brother:
http://OpenData.stackexchange.com
When closing such a question, how about suggesting Open Data?
Questions about obtaining specific datasets are off-topic on Cross Validated. You are welcome to post this question to the Open Data QA site instead, thank you!
Please note that Open Data is mostly for datasets under an open license, even though commercial datasets are usually tolerated.