[Treo] WebOS vs. Android

[Dr. Evan]

I've been a loyal Palm user for years and had a Pre since it came out last 
year.  Now, I'm thinking about getting the HTC EVO and I'm wondering how webOS 
compares to Android.  Specifically, is there a "homebrew" community for Android 
or is the device not customizable beyond what Android allows?  Also, how does 
Android's multi-tasking compare to that of webOS?  Thanks!