Check out a
screenshot of Google
GMail's GUI. Its fast, simple, and straight forward. Google Ads appear on the right-hand side when composing a new email (um.... I mean
GMail). However, they are not imposing, distracting, or annoying. Unlike
Yahoo and
Hotmail , advertisements (images and/or text) are NOT appended to the bottom of every message you send.
07/01/2004 Update: http://gmail.google.com/gmail/help/screen1.html