If I'm not finished with the source page I ALWAYS Open the link in a New Window.  I don't use Tabs.  The way a lot of pages are written now, it takes nearly as long to 'Back' to a page as to load the page initally.  Advertisers want you to see a new ad, java scripts, etc ...

The only time I use a link normally, left click, is when I'm finished with the source page and am ready to move on.  It's pretty common for me to have as many as three IEs open at the same time.

Best Wishes,
Rªnce