For years I have used Poets.org as supplemental material when teaching literature courses. The site has improved a great deal. The information about the poets is interesting and valuable, but it is not an ideal location for conducting research and locating secondary sources. The essays and interviews are helpful, but if a student is doing literary research, then the library databases are more suitable for getting a compiled list of literary criticiques on a poetry era, a poem or a poet. Instead, this site is a general gateway for learning about some poets. The video and audio components are VERY useful learning tools. What I dislike is that historical poets, and some spoken-word poets or great reknown, have been overlooked and are not in the directory. Such poets, like Saul Williams or the late Sekou Sundiata, should be included. Also, the historical verses of the Therigatha - the first Buddhist nuns - is an absolute must; Sappho is included, after all. Lastly, the earliest known poet, who happens to be a woman - Enheduanna - is an absolute MUST for any poetry collection.
The site is very cluttered, but the structure facilitates its use. The videos and audio play without difficulty.