Who will own a domain in a collaboration?

I have posted this in another forum, but since I need as many suggestion, maybe I can get a good one here...
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I have come into this situation, I have a relatively new website and there's a quite big network site that offer me to let my site join their network. I have been doing some 'research' on this network site (like looking for it at alexa, seeing the forum members, etc) to know if they're really good in traffic, and come to the conclusion it's big enough (I would like to have some suggestion how can we know estimated traffic for a site other than alexa?).

After I talked with the site's owner, he told me that if my site join their network, they have to claim the ownership of my site, which means that my domain should be registered under their company's name and move it to their registrar as well as transferring my site's content to their server (and other few things, but I'm now concerning to these 2 things). Their reason is beside my site should be under the same 'big name', it will make sure that I won't go away with my site when it becomes big. I can accept both reasons, but giving my site's domain+content to their hand means that they can also go away with my site and kick me out in the middle of journey and obviously I will lose my site too!

So, how to handle this situation? I don't think to bring this to the lawyer since it's too pricy remembering it's currently a new site and we live in different country that it's difficult to make a legal agreement between us (and if we can, where do we bring the agreement if something bad happens?). I don't know if there's a feature in any registrar that allows a domain being registered under two names and for any changes it should be confirmed to both parties. Or anyone here have an idea?

Thanks a lot for reading my long post but I'm surely need your suggestion!

 

uh.... no replies? I know it's difficult situation, but please give me your opinion here, I really need it.... thanks.

 

Don't give ownership to anyone and keep everything in your name.

Find another solution. They have nothing to loose and you do that is not a good deal.