1) Article on Data Mining misconception by Tim Graettinger.
2) Understanding Hadoop Clusters and the Network by Brad Hedlund.
3) Brewer's CAP Theorem: http://www.julianbrowne.com/article/viewer/brewers-cap-theorem
4) A Survey of Open Source Data Mining Systems by X. Chen, Y. Ye, G. Williams and X. Xu: http://www.springerlink.com/content/b7437372g47wh517/fulltext.pdf?MUD=MP
5) Choosing NoSQL database: http://highscalability.com/blog/2011/6/20/35-use-cases-for-choosing-your-next-nosql-database.html
6) Brief introduction to "apply" in R: https://nsaunders.wordpress.com/2010/08/20/a-brief-introduction-to-apply-in-r/
7) Hadoop Installation in Windows 7, stepwise guide: Hadoop Win Install Wordcount Example
8) Hadoop tutorial: "https://developer.yahoo.com/hadoop/tutorial/"
9) Online data cleaning, transformation and visualization tool www.oinoi.com