Clearly this helps Rutgers, especially their football program. They've done such a good job of putting themselves on the map, but with the state of the Big East, that wasn't going to last for long. Worst case, they have much more exposure, and certainly won't be worse than Indiana. Illinois, Northwestern, or even Iowa could become very realistic models for Rutgers. Huge win for them, and should make them even more relevant in eastern recruiting.
It will help make Maryland more money, since everything has become so football driven, and help with most of their other sports. However, I have a feeling this move will make Maryland basketball irrelevant. On the east coast, players want to play in the Big East or ACC. Moving to the Big Ten will move Maryland off the radar, and they'll likely never be anything more than a middle-of-the-road team again. I can see them becoming a slightly better Penn State in hoops, which at least isn't Nebraska.
Not that it matters too much. Losing some relevancy in basketball is a small price to pay for the lift the rest of the athletic department should see.
"I'd knock your brains out, then pick them up later."