i prefer using address http://webcache.googleusercontent.com/search?q=cache:
just added the link that you want to read it's cached version.
for example , if you type ca.news.yahoo.com/most-popular , you'll brought to it's mobile version. so just try to go to http://webcache.googleusercontent.com/search?q=cache:http://ca.news.yahoo.com/most-popular , that gives you great result.

hi , currently i'm using opera mini 4.2. I had problem with yahoo mail a week ago , then i found this address :
http://id-mg61.mail.yahoo.com/neo/b/launch?.rand=4a8hf26ru78l2
and voila , my mail just came back in desktop version.
try it !