rcade wrote:
>I tested this with single escaping ("Loïc Le Meur") and double
>escaping ("Loïc Le Meur") in Internet Explorer, Firefox,
>Bloglines, My Yahoo and NewsGator online.

I haven't had a chance to try your specific tests but I have done some
escaping tests (titles only) on various aggregators which might be of
interest to you. The most important thing that I established is that there
are a number of different ways in which to escape things (I have 20+ tests)
and different aggregators will fail on different sets of those tests.

For example Bloglines, which passed your double escaping test, failed on 8
of mine. Even Firefox, which you would expect to treat everything as plain
text, managed to break on 8 of the tests (a different set to Bloglines).
They all managed to pass the single escaping tests though, so if you're a
feed producer, that's probably what you should be going with.

Regards
James