I successfully temporarily rooted my phone (yay) using z4root, but discovered the rooted environment used over 20 MB of storage (boo). While having a rooted phone would be nice, it’s not worth giving up that much on a device that only has 140 MB of user accessible storage.
Other than this minor disappointment, I am really enjoying the LG Optimus. It’s not the flashiest device out there, but it serves my current needs well.