I'm assuming John Heenan's criticisms of web2py would apply equally to Django?
Please correct me if I'm wrong. Django can scale pretty well - here's a presentation showing how Disqus have scaled their Django app to 250 million visitors a month and a peak of 17,000 requests per second to Django with Apache and mod_wsgi: http://nosql.mypopescu.com/post/1409154668/disqus-scaling-the-worlds-largest-django-application Presumably web2py could do the same?