Honestly, it's rare that I don't have tabs that I'm not finished with, so when I open my browser, it opens with all the tabs I had open in the last session. Right now, I have GMail, the Gibson Forums, MyZone, a few Lifehack pages, StackExchange, SoundCloud, Facebook (two FB tabs open, actually), a page on PokéRadar chaining, Bulbapedia, 4 tabs of courses offered by Zend, an article on typing Esperanto in Mac OS X and the settings page on my WordPress site.