What's GlassFish market share compared to other app servers?

Eduardo's answer:
There a number of surveys and they all are showing improvements. The tricky part is that there is a substantial lag in the surveys. By the time ZDNet or Evans Surveys show the result they are at least 6 months old. To boot, Evans Surverys NAD (North American Developer Survey) changed the format and it is extra old. I'm very much looking forward to the updated percentages to see where we are.

In the meantime, check out these...

http://blogs.oracle.com/theaquarium/entry/what_a_difference_18_months
http://blogs.oracle.com/theaquarium/entry/zdnet_glassfish_validating_sun_s
http://blogs.oracle.com/theaquarium/entry/from_#8_to_#2_-
http://blogs.oracle.com/theaquarium/entry/another_month_another_glassfish_geo
http://blogs.oracle.com/theaquarium/tags/adoption