In case you didn't know this yet StumbleUpon is a social network that allows users to discover and rate webpages, photos, videos and news artices using a web browser plugin.

A couple of days ago StumbleUpon launched their Facebook application, and now are working on a new profile layout. This is still in beta but users can take advantage of it by accessing this web page.

Some new features for this new layout are:

What's New - where you can find the latest reviews from your friends all in one place;

Integrated HTML editor - with the WYSIWYG HTML editor you can personalize your blog;

Themes - browse themes and choose the one that fits best to your likes;

Simplified Navigation - which gives you enhanced accessbility.

StumpleUpon was acquired by eBay in May of 2007 for $75,000,000 USD.