> The best seem to be Gunicorn and uWSGI, and Gunicorn seems the best supported and most active project.
This is not so cut and dry. In May, Gunicorn had 12 mailing list messages, where uWsgi had 191. uWsgi has a twitter with 225 followers, where Gunicorn has none. #gunicorn@freenode has 32 users, but #nginx@freenode seems to have a lot of uWsgi users.
Also, the author mentions nothing about installing the Nginx PPA for ubuntu. If you use the default repo on Lucid (as suggested by the author), you will end up with a very old version of Nginx that doesn't even natively support wsgi.