@ Pondus I ran the "ShieldsUp" test at GRC with both Private Firewall and OA Free. Private Firewall did better. They both failed at the port 443. Which is a https port/connection not http. Private Firewall was much more stealthy than OA Free. For what it's worth.
Dell Inspiron, Win7x64 SP1, Pentium Dual-Core T4500, 6 GB Ram, Avast Free v2015.10.2.2214, Comodo Firewall 5.12 w/D+, MalwareBytes Premium 2.0, MCShield, Super Anti-Spyware Free, SpywareBlaster, OpenDNS Premium, Keyscrambler Personal, Ghostery. CCleaner, Greenshot, Firefox (latest build), Google Chrome (latest build) and, various browser security tools.
When you do something, do it with a purpose and do it on purpose.