1) Make a check box in the options panel to hide all game chat.
2) When checked, no game text will show up in the lower left. Speech bubbles will still show in the main screen.
3) Server notifications/warnings are exempt as well as text from friends
4) Check box is unchecked by default
Why this is needed:
1) People with small computer screens who can't play full screen have about a quarter of their screen covered by the text box. A full text box makes it hard to see objects that appear in that region of the screen. While the /clear command does clear the text box it is annoying to have to do it every few minutes or so (and while in battle, it is not convenient). Typing anything in the chat also happens to remove default auto-target (which btw is another bug that I think needs fixing).
2) It offers a convenient alternative to ignoring a lot of people for short periods of time. This has practical applications in Lockdown arguments and when talking to friends in a crowded haven. Perhaps people can find more.
3)It shouldn't require very extensive coding effort to implement this, and the feature would be optional.
Petition? I just think this needs to be a suggestion. Although +1 to you sir, chat is so annoying sometimes.