Thanks for all the opinions and comments on this.

I think we should go with 650 wide, as that's the increase that works for all of us. I think we can make nice looking signatures that wide within 50 kb. So I like to suggest for the maximum amount of combined graphics in signatures: 150 pixels high, 650 pixels wide and 50 kb in size. People just wanting to update their signatures to those new max can do so, I'll fix the settings in a minute.


I'd like to move to the next step in this discussion now:

I'm not a fan of Flash as I immediately get reminded of my 64 kb modem and way too big (and impossible to skip) intro pages in Flash, but I saw the nice sides of it too. In the past we had some nice animated Flash signatures of say rolling landscapes (animated gif would also work). What do we feel about it today?