An overview of different techniques to extract actual content from web pages.

R is an open source implementation of the S-Plus language. It is freely available and is licensed under the GPL. The language simplifies many statistical computations and can be a powerful tool.

Second part of the very good article about having more data vs. better algorithms

Very interesting thoughts about the fact that sometimes it pays more to add more data rather than fine-tuning the weights on your fancy machine-learning algorithm.