I've been using the older Valum's ajax uploader and it actually
works great. Although it only uses the hidden iframe technique
for uploading files, I'm wondering if browsers may eventually
restrict this functionality once the File API has a couple years
to become the norm. Working with the File API is certainly a
real blessing, but not by itself a perfect solution because of
the need to support older browsers. I'm just wondering if my
clients will eventually start calling me and telling me that the
uploader script isn't working anymore. What do you think?