A little over a month, we announced the deprecation of the legacy gadgets API, and in the intervening time have been hard at work on resources to help with the transition. The first of these resources, a gadgets.* migration guide, has just been posted to code.google.com.
The guide includes mappings between _IG_* and gadgets.* methods, helper functions, and pointers to third-party libraries that you can use in your updated gadgets.
If you have any questions about the migration guide, or the transition from _IG_* to gadgets.*, please visit the iGoogle Developer Forum.