but there is a problem with "always open in ..." please give us an update.
when I have put the web page in some container and then add another web page in another container, the first page has become in the last container I choose.
note: the web page I mean is from the same website for example:
1) www.facebook.com/oyrwe
2) www.facebook.com/cvxvx
it also needs some grouping mechanizm