We tried to post a comment to a .blogspot hosted blog which uses the third party blog Comments and Trackback system Haloscan.
However, despite allowing us to Preview the comment, once we tried to Publish it, then we got:
"Sorry, Tor users are not allowed to post due to abuse"
We were not actually using Tor at the time !
Surely Haloscan cannot be so stupid as to be censoring and blocking Tor exit nodes by IP address allocation block, thereby affecting all the other "innocent" users of an Internet Service Provider, can they ?
If you want to check to see if Haloscan is blocking your ISP, with or without Tor, feel free to try to post comments to http://spybloguk.blogspot.com/