New Google interface test site

I didn't see this mentioned.. perhaps it's just me.

Google has launched a new site, called SearchMash.com to be used for user interface experiments. Here's a relevant search

It has several interesting features - one is reordering results. It serves no purpose at the moment, except for the reordering itself, but a speculative use could be interpreting a reordering as a "vote" or storing a reordered search list as a bookmark.