This is just a short list of a few of the websites I've encountered and like to go back to - for a more comprehensive list check out the listings on Great Works, and follow links recommended by the other sites below.
http://shadowtrain.com/ 'a bi-monthly gathering of poems, translations, articles and other writings, from the lyrical to the innovative, whatever stings and stuns the editor.' -which will include 2 of my poems in November!