In case you've had your head in the sand...
... or been so busy working on your current projects that you've missed all of the Ajax hype, here's a link to a very good introduction to Ajax. The version of Spread for WebForms that we currently have in beta (2.5) offers Ajax support and according to one of our customers testing it, he's been able to replace over one thousand lines of client side code with the new Ajax support offered in Spread Web. Mastering Ajax, Part 1: Introduction to Ajax -Gregg