for post messages and comments.

@kzn:

Library Genesis:
free-books.dontexist.com

@kzn:

Similarity search wiki
sswiki.tierra-aoi.net

@kzn:

Information retrieval book nlp.stanford.edu

@kzn:

simhash/minhash
knol.google.com

@kzn:

cs.cmu.edu