Open up your map and view "traffic advisories". When you mouseover you'll see where people have to wait to jump into a system. If a node is "full" which according to CCP is 95% load or 600 players, you have to queue to get in. If your 0.0 system is linked with say, Jita, you're hosed. This means you could jump to a gate and be forced to sit at the gate until your "turn" is up. I've heard reports of 15 minutes plus and still not allowed to jump into a system. As you can see, sitting outside of the last gate of your pipe running in 0.0 when you know gatecamps are common, is not exactly a great situation to be in.
If you want cheap ganks, just check the map for wherever there's a queue in 0.0 and sit on that gate with some friends. Can even ditch the web since they can't even jump if they make it to the gate.
It also makes shutting down a system alot easier. You could throw 100 guys in a system and effectively bubble camp the gate with 10 players since they'll just be coming through the gate one at a time.
I'm going to assume it's temporary or it makes traveling in 0.0 as well as "fleet" battles pretty moot.