It is really difficult nowadays to write short comments on competition issues; the excellent blogs from all over the world cover a wide range of topics. Nevertheless, I thought it is worth to point out one. The ICN Blog has an ICN Treasure Trove series of entries. Really interesting.
Just to note; from the OECD website. One of my favourites of those I found recently is the mergers study by Whish and Wood (Whish, Richard és Diane Wood: Merger cases in the real world: a study of merger control procedures. (OECD, 1994). See here.