slashdot has just posted an article on the usefulness of doing a phd in it . goto the link below for a view http://ask.slashdot.org/article.pl?sid=03/08/18/2214212&mode=thread&tid=126&tid=146&tid=99
slashdot is a tech news website. membership is free and can post question at slashdot forum for discussion and comment. i posted this link so that anyone interested in this topic can join in the discussion as well. if u want to make your 2cents worth u can register with slashdot for free as a member and participate as well. reading the forum need no registration. hope the above is useful ong