I noticed that if I have a gmail tab open with conversation view on/off, and then I open another tab and change the conversation view setting, my original tab stays in the conversation view state it started in such as when doing new searches etc. and the new tab uses the setting I just changed it to.
This led me to think there might be some JavaScript bookmarklet / favelet / "scriptlet" that could easily let us change the setting for a given gmail tab temporarily without having to go into the settings.
Does anyone know of this already in existence or is anyone able to create it? My thought would be to capture a load of gmail with it on and with it off and do a diff / winmerge on the two to see what's different and take it from there, but I'm hoping someone's already created it =).