when I add a Tumblelog, it only adds my first blog. I can't add another blog for some reason.
Hey Max, in your "My Tumblelogs" stream are you able to click the settings "gear" icon and see all your different Tumblelogs listed? Also, if they are private -- they won't be listed for use at this time.
You should have access to all your non-private Tumblelogs from the settings drop down. We're working on a fix that will keep the stream logged into the selected Tumblelog without reverting back to the first one after leaving the tab.