Just tested out a project where we linked 4 honda 2000i generators. We weren't sure if it was going to work but for those wondering, it does. We made a virtual 8000 watt generator that will power our whole camp. It also appears that we will be able to expand it well into the future to cover our camp needs. Not sure if anyone else is interested in this info but I thought I would share anyway. Here are photos of our project:

gallery.me.com/idahomojo#100263

Remember your limiting factor is the extension cord that carries the power. We use 100 feet of 6 gauge that runs to a construction site style distribution box. We actually should only put 6000 watts through that cord but we hope the occasional spike in the system won't melt the whole system down. We also installed a TED Energy Detective to monitor our use to make sure we stay within rated capacities. We also built long run fuel systems using outboard motor tanks so we never have to pour fuel all week. If anyone needs details, drop me a line. If I am the only one who has ever wondered about this that is cool also. I like the level of redundancy in the system. - GB