Sentiment analysis, stemming and lemmatization, part-of-speech tagging and chunking, phrase extraction and named entity recognition.
The WebKnox proxies API lets you retrieve public proxies. We try to keep a list of fresh, unblocked, high responsive, and alive proxies. Public proxies come and go so it is not guaranteed that they are available at the point of retrieval. You can improve proxy delivery by sending feedback whether a proxy is blocked or dead.
You may know me from sites such as http://streamhacker.com and books such as "Python Text Processing with NLTK 2.0 Cookbook".