The fundamentals are there, merchants right and left are picking up Bitcoin -- it's all over the fuckin' evening news and The Colbert Report, for God's sake. A $1000 coin is in sight. But we'll never get there if we let this entity keep dropping our holdings like flies each time he ddos'es the exchanges and dumps a couple of thousand coins.
Just stay calm when the time comes. You'll know it when you see it this time. Until then, day trade till your heart's content!
If someone is dumping to crash the price and there's a DDOS, it's because they're buying back in. Otherwise you'd just dump it all and leave. Why the DDOS? Why care how low it goes? If you're forcing it as low as possible, that's so you can buy back in.
Accept the fact people are going to run the price up and they'll run it back down. Then run it back up. That's how they make money. They won't kill the golden goose, they're making too much money. You can't fight the swings. If someone wants to push the price down and they have the coins/money, they will. There's no stopping it. If someone has the cash and wants to jack the price up, they will. This market is mostly supply and demand. If you have the means, you can push BTC whereever you want. Price starts dropping, people sell. Price starts rising, people buy. That isn't going to change.
You can feel good that people are making millions off it, and they're going to make sure it stays around if it's within their power (MtGox is at the top of that list, and they have crazy amounts of influence on the price/market).