There are at least 6 artists with this name:
1 - E's real name is Mark Oliver Everett and he is the driving force behind the band Eels. He released two solo albums under the moniker "E": Broken Toy Shop and A Man Called E.
2 - E is a Finnish/ Portuguese Experimental Black metal project. ShadoW (Portugal) and MTYM (Finland) are the only members of this band.
Facebook page: http://www.facebook.com/pages/E/168957753128955?v=wall
Myspace page: http://www.myspace.com/edimension
3 - E is also the name of a Chinese alternative rock band.
4 - E was also a punk rock band from Caracas, Venezuela that existed around mid 2002-mid 2003 that featured Archi from ATTE and IL from Boom Boom Clan, Las Américas, La Fiera Del Vinil, Ulises Hadjis' live band and Elaine.
5 - E is also a Czech progressive rock-alternative band from Brno.
Visit http://www.facebook.com/pages/E/49547237061 for the Czech band E (CZ).
6 - E was also the name of the lead singer of early 1990s UK alternative rock band Mass.
"E" is also a common, often accidental, mistag. If the song you are scrobbling is not by one of these artists, you should change your tags to the correct artist.