Those of you who have tried to post any comments recently may have noticed that I have added an anti-spam “captcha” feature (type into a box the words you see generated onscreen). It’s a shame it’s necessary, but the spammers are getting more sophisticated.

The good part is that the captcha is part of a program currently being used to digitise books from the Internet Archive and make them freely available. Kudos to the authors from Carnegie Mellon University.