The latest OPSWAT report comparing worldwide user preference for various antivirus solutions shows Microsoft Security Essentials in the lead with 16.3% of the market share, followed by avast! Free Antivirus with 13.2%, and another product of the Redmond-based company, Windows Defender, with 6.2%. Almost all the usual suspects are included in the report, but, for the first time, Malwarebytes Anti-Malware is also listed, with a 4.2% (7th) chunk of the market, ahead of some solutions…