Google Apps as Mailto in Opera
Just a quick note this one.
To make mailto: links work in Opera 9.62 when you use Google Apps for your email, you need to do the following -
In Opera, Tools > Preferences > Advanced > Programs
Double-click the mailto: line
Set as 'Other application'
Porgram is: C:\Progra~1\Opera\opera.exe
Parameters are: https://mail.google.com/a/irrelevant.com/?view=cm&fs=1&to=%t&su=%s&body=%m&cc=%c&bcc=%b&tf=1
Remember to change "irrelevant.com" to your own domain, just as it appears in the URL when browsing mail normally! Also, your path to opera.exe may be different - some guides suggest just using "opera" on it's own, but this didn't work for me.