I've been playing with ser for about a week and we're planning on using it in both memory and runtime constrained embedded environments. To characterize it in newbie-ish, both the IPAQ and big system applications, as low as a relative handful of simultaneous calls in some comparatively remote hardware to hundreds and thousands of simultaneous calls in similarly architectured machines in more central locations on hardware that is less cost sensitive and more spare memory and cycles. I started looking at this seriously a couple days ago and really could use some pointers. thanks Greg