I hv been working with a PGWp since 2013. PGWP is LMIA exemptand is valid till oct 2016.
Tubilai said:If you've been working with a valid LMO/LMIA then you could apply under Canadian Experience Class. I haven't read much about it but I don't think advertisement is a requirement. Advertising is one of the requirements for LMIA.
Read this page: http://www.cic.gc.ca/english/immigrate/cec/apply-who.asp
Use the Come to Canada tool and see what are the requirements: http://www.cic.gc.ca/ctc-vac/ee-start.asp
And good information from the Law firm that runs this forum: http://www.cicnews.com/2014/11/canadian-experience-class-applications-refused-114114.html