The site appears to be very simple and very text based, but when you log in (you don't have to register but the site is far more useful if you do!) and start to dig around a bit there are some really useful features.

Wordie enables learners to create and share word lists, but it also does much more. Users can click through to a range of information sources related to the words, such as online dictionaries, Wikipedia, Thesaurus and even Amazon books related to the topic.

Perhaps more useful though, in spite of what it says under the logo, users can also get images related to their words. Users can make notes about each word and view notes from other users who have also included the same word in their word lists.

Try it out at http://wordie.org/.