One important aspect of the ruling which I think many might overlook is that the decision finds only part of DOMA to be unconstitutional. The judge's ruling said that DOMA violates the states' rights to govern their own marriages, and that narrow part is unconstitutional. What this means is that (if the ruling is upheld) the federal government will not be able to tell individual states that their recognition of same sex marriages is unrecognizable under federal law. However, the individual states will still be free to pass and uphold their own bans on recognition of same sex marriages. Basically, if same sex marriage is legal in the state, the federal government will have to recognize it. If same sex marriage is not legal under state law, then the federal government will have to recognize that as well.
Considering that only Connecticut, Iowa, Massachusetts, New Hampshire, Vermont, and Washington, D.C. allow same sex marriages to begin with, the ruling will not grant same sex marriage rights to citizens of the remaining 45 states.
Don't get me wrong, this is an incredible victory for equality, but we still have a long way to go before same sex marriage is a protected, fundamental right across the nation in all 50 states.