Anthology of contemporary poetry that each day brings readers a
new poem from books, magazines and journals currently in print,
along with information about featured poets and publishers, news
from the poetry world, and occasional special features.
Designed to "explain the history of poetry forms in a way that grabs practicing poets and general readers alike. The exhibit features a tour of European poetry, introduces 18 poetry forms (from ancient to modern, well-known to obscure), provides background information and examples of each, and invites visitors to try to "make their own" poem using each form." A very cool site; my one criticism is that there's not enough actual poetry on the site.
A handy rhyming dictionary with a look-up function (in case, for instance, you're looking for a rhyme for "desk" and aren't sure what "churrigueresque" means). You can also use the site to Tweet poems or post them on Facebook.