I don"t think I"ve ever actually seen someone intentionally string-bet trying to get a read - I"ve seen loads of people accidentally do it, but never intentionally, yet it"s something that"s guaranteed to have the whole table jumping about in hysterics. STRING-BET BURN HIM! String-betting is the poker equivilent of being Catholic in the 17th century.
You shouldn"t be allowed to do it, but if I ever fell for such a tactic I"d have to take myself off some where quiet and ask myself some searching questions about whether poker is really for me.