filter function refactoring:
http://blog.tmorris.net/posts/refactoring-filter/

RLE coding:
http://www.gwern.net/haskell/Run%20Length%20Encoding
http://www.reddit.com/r/haskell/comments/16nlx7/golfing_runlength_compression_in_monadius/

FRP(netwire):
http://danbst.wordpress.com/2013/01/23/novice-netwire-user/
http://www.reddit.com/r/haskell/comments/173cxi/success_story_novice_haskeller_moves_console/

LogFileAnalysis:
http://vimeo.com/12354750
timeplot - http://www.haskell.org/haskellwiki/Timeplot

DataAnalysis:
http://twdkz.wordpress.com/2013/05/31/data-analysis-with-monoids/

Simple HSpec:
http://hackage.haskell.org/package/karver

MapReduce:
Fokkinga - MapReduce - a two-page explanation for laymen

api-tools:
http://hackage.haskell.org/package/api-tools
https://github.com/iconnect/api-tools