Areté Magazine: Literary magazine edited by British poet Craig Raine. In its first few issues Areté has already published such well-known authors as Harold Pinter, Martin Amis, Ian McEwan, James Fenton, and Julian Barnes. Worth the time of anyone interested in contemporary literature.
Between the Lines (Interviews with Poets): Poetry site with excerpts from interviews with some of the best living poets, including Seamus Heaney, Anthony Thwaite, Thom Gunn, Donald Hall, and W.D. Snodgrass.
philiplarkin.com: Website of the Philip Larkin Society, a group devoted to the study, discussion, and promotion of Philip Larkin's poetry.
Modern American Poetry: An Online Journal and Multimedia Companion to Anthology of Modern American Poetry hosted by the English Department at the University of Illinois at Urbana-Champaign.
poets.org: Website for the Academy of American Poets. Features poetry news and events, biographies and bibliographies of poets, and an online collection of poems by various authors.