Webpage displaying apostrophe like this? It’s

Apple – Support – Discussions – Font weirdness ….  Turns out that Tom was right.

Nothing to do with fonts. Your browser is reading UTF-8 encoding as if it were Latin-1. Most likely the web page is defective. Try going to View > Text Encoding and select UTF-8.

Provide the URL and I can probably tell you what the problem is with the page.

He further states it was because:

Here is the problem webpage:
http://www.birds.cornell.edu/Publications/LivingBird/Winter2005/Age_Binos.html

The coding of this page is defective. They have declared the page as having charset=iso-8859-1, but then pasted in text which has curly quotes encoded in UTF-8. As a result I think no browser can display it correctly unless the user manually changes his encoding every time.