So DOMA is unconstitutional, but Prop 8 was dismissed. I think what this means is that the federal government will recognize same sex marriages as legal unions that will get all the rights that an opposite sex marriage would get. However, it's still within a state's rights to make same sex marriage unconstitutional. With more and more states legalizing same sex marriage each year, let's hope that this decision doesn't really matter in a few years.
Edit: Actually, apparently the Prop 8 decision is that the Supreme Court determined that the people defending Prop 8 in the California Supreme Court had no legal right to defend it, so they sent it back to California with the instructions to dismiss the case. I don't know what that means, but it seems like SCOTUS managed to tiptoe around the issue of whether states have the right to ban gay marriage.