The WordPress 2.3 beta tag cloud is XHTML Transitional not Strict. Also if you want to keep UTW then the permalinks /tag/sometag will not work; the /tag/ will go to the WordPress one and not the UTW version.
Hopefully someone will make a UTW like interface, presentation plugin that lets you use the built-in tag system but enjoy UTW’s tools and functions.
Comments by Jan Dembowski
A 3D Printed Dial
"Thanks! It was fun and now I'm looking for more things to..."
Pi Zero W makes for a compact Retropie box
"It's really fun to put together too. I recommend anyone who..."
Next time can it yell “Danger Will Robinson!” instead?
"Tomorrow I'm going to yell "PIGGY BACK ALERT!" to..."
Scrape IFTTT Instagram media into WordPress
"I went back to the Dsnwrks plugin. It just started working..."
3D Printing the WordPress logo in two colors
"You're welcome. ;)"