There are various online services offering automated web page checks. pinkjuice.com/check is just a simple tool generating links to the report pages of some of those services, including emulators, validators, and accessibility checkers.
I find it more convenient to fill out one form instead of more than ten when checking a page. And it's handy to have a list of all the results pages, for example when sending a status report to a client about a website that's being worked on.