Not all the sites we looked at for the Web Site Hot List have big numbers, but some do have big ideas. Here, we list a few of the sites we were most intrigued with, whether it was for the potential for traffic, the use of new technology or a new advertising model. Some of these sites are not new, but they are moving ahead, trying things the competition hasn’t. Others are innovating, using the Web in ways that could change the medium. Take a look.