Lots of questions that I am sure will be answered on Jeremy's and other Yahoo! blogs such as: can I change the look and feel? Can we have nice URLs without question marks? etc.
From Hello World.:
Hello Yahoo 360! This is lame but not as lame as MSN Spaces was :-) at the start. All you MSN Spaces people don't get upset; MSN Spaces has a niche and will survive in spite of my whingeing!