In Drupal, forms have nice little features which slide up and down some areas and make textareas resizable. The example is in the search page, where the “advanced search” field slides down when you click on it. It is a nice feature, especially in administration pages where forms tend to get very long. And it is tightly integrated to Drupal so you don’t need to waste some precious time implementing it.
My investigation concludes that by using this module properly, you can reduce the total size of one page by 28 KB.
I hope that this module helps bloggers using Drupal a bit. And the reason I’m not putting this in drupal.org is that it is so lightweight (the code is just 2.5 KB) that I don’t want to bother setting up CVS, maintaining it, etc. If someone wants to take care of it I would be glad, just drop me a line here (it is GPL, by the way).