phranque - 9:06 pm on Feb 12, 2009 (gmt 0) interesting you should mention that.
Let me add that when you are constructing your alt attributes, and they are replacing important text, you should pay very close attention to proper case. It should match the image version exactly.
the font in the image that started this whole discussion is all upper case.
the "uppercase" letters are "tall" and the "lowercase" letters are "short".
does that semantically imply upper/lower case?
interesting you should mention that.