I will never cease to be amazed at the people who say, "going to the ground in a multiple attacker scenario is stupid." Okay, well if you are implying that to keep it standing is the best, I hope you only mean that you're in a better position to run away.
If you are fighting one of my buddies and me and a couple friends decide to jump in, I don't care if you are standing or on the ground. You're not going to be able to defend six fists and or legs coming at you simultaneously and from different angles. And if I'm the guy behind you, I'm going to do one of three things: A. Run up and punt you between the legs. B. Club you with the nearest hard object. C. Grab you, probably in a full nelson, with my legs one in front of the other and between yours, surf-board style, so you won't be kicking me in the nads--and my friends will promptly beat you into hamburger with an assortment of fists, objects, etc.
I've said it once, and I'll say it again, the only solution to fighting multiple attackers is not to, unless they are drunk, small, or obviously not game to fight. Track and field is the best training for multiple attackers.
In another thread similar to this one, there is a story about Urijah Faber being attacked by some locals in an Asian country. He ducked, dived, hit and ran, and barely got away with his life. And the vast majority of the story is about him dodging and running. There were ten guys, not easy for anyone, but it should be noted that he didn't take out one of them. Whenever he had a split second to throw a strike or semi-throw one of his attackers, it only served to create an opening for him to run. In the midst of dodging blows and trying to keep track of multiple people in various positions, he couldn't manage to land any solid, finishing blows.
If he had been anything less than an accomplished MMA fighter in the best shape of his life, he would have been toast. Imagine one of us.
http://www.youtube.com/watch?v=rOQLg7Kc8So
Sorry about the rant, and I know no one has directly stated that you can out-strike multiple attackers. But that's what many people mean when they say, "I wouldn't go the ground in a street fight." But, it's very possible that you are all knowledgeable, sensible people and nobody meant that. This is for the goofballs who will inevitably show up and say that their brother KO'd six people in a streetfight--some of them armed, or "you can do it, you just have to...blah, blah, blah."