Percentage of significant
images provided alternative text, pages with over 90%
of significant images
provided alternative text, number of web sites in group,
and number of images
examined.
We also considered 5
important groups of web sites and measured the percentage of significant
images labeled.These included the 500
high-traffic websites, the 136 computer science department homepages, and the
top 100 international universities.We
also considered the 137 federal agencies and 51 U.S. States plus D.C. which
we saw as an important group because it shows what effect legislation can do
because both of the latter groups are compelled to provide accessible
information by Section 508.