Compared to what it was before, BS is now great! You won't make the money of a JC, but you won't lose money at the high end anymore.
About 95% of the BS plans in WotLK are BoE and can be sold on the AH.
You can add a socket to your own bracers and gloves.
You can add a socket to anyone's belt (the mats for the belt buckle are stupid cheap, and the buckle sells for 60-100g on most servers that I have seen). Every time someone replaces a belt, they need a new buckle, so the buckles will never go "out of style".
You can make blues and purples for plate-wearing DPS, plate-wearing tanks, and plate-wearing healers and all can be sold on the AH. The tanking and DPS gear generally sell for more than the healing gear, since only Holy Pallies would want the healing gear and overall it isnt that great.
You probably won't become rich being a BS, but you will certainly make a profit on many items if you learn which items to make and watch for when those particular items are scarce and high-priced on the AH.
You can also make keys to open any lock in the game fairly cheaply now, and can steal lockpicking tips from rogues this way (and open all of your own lockboxes as well).
It is still a massive goldsink from level 1-350, but if you just choose the cheapest thing you can make that is at least yellow (preferably orange or red) and get to 350 as fast/cheaply as possible, once you start learning all of the Northrend plans you will actually see the profession start to become profitable.