According to a July study done by BZ Research, 3 out of 4 development managers are or will be using Ajax in their projects.

This is a great indicator as to the growth of Ajax-based technologies and the maturity of the market. With frameworks like JQuery, Dojo, YUI & MochoKit becoming more feature rich, you can expect further acceptance of Ajax in the near future.

Read more here in the Software Development Times article:

<a target="_blank" href="http://www.sdtimes.com/article/story-20060901-12.html">Almost a Clean Sweep: About 3 in 4 Use AJAX</a>