An interesting read from a Canadian source, although the same could be said for the US or any number of other stamp issuing countries around the world.
http://telegraphjournal.canadaeast....icle/1396645Collectors often lament the fact that stamps are going away in preference to labels, meters or other stamp prepayment options, but for those of us who still collect stamps the traditional way, the varieties of the same stamp are getting way out of hand, especially for those on a tight budget.