CAMBRIDGE -- A Harvard University student's fledgling dorm-cleaning business faced the threat of a campus boycott yesterday after the school's daily newspaper slammed it for dividing students along economic lines. The Harvard Crimson newspaper urged students to shun Dormaid, a business started by Harvard sophomore Michael Kopko that cleans up for messy students. "By creating yet another differential between the haves and have-nots on campus, Dormaid threatens our student unity," the Crimson said in an editorial. "We urge the student body to boycott Dormaid." But Mr. Kopko, 20, said he could not understand the Crimson's reaction to his business, which...