By Mark Guari** Sept 11 (Reuters) - university of Illi**is trustees voted overwhelmingly on Thursday **t to reinstate Steven Salaita, whose Twitter postings about Israel caused him to lose a promised faculty job, sparking debate about academic freedom and the use of social media. Salaita, a former tenured Professor of English at Virginia Tech, accepted a tenured professorship in October 2013 to teach at university of Illi**is' American Indian Studies program but it was revoked in early August after Salaita posted tweets de**uncing Israel's military strikes in Gaza. Many of the Twitter messages were inflammatory and in justifying its decision **t to give him a job, the university said they were demeaning and uncivil.