No borders on user-coded tables. When I submitted July 4, 2009, text floated magically in the cells and columns where I placed them, with no visible strings and wires. I was able to add borders where I felt them appropriate, by using the <table>'s "border" attribute.
An hour or two later, someone apparently changed the CSS for tables such that every cell has a thin border. While I agree there may be situations where this looks nice, I feel it destroys some subtle options for placing text that would otherwise be empowered by <table>. Case in point, my WU looks butt ugly now – was that effect intended? I'd like to see this change undone, please.