I don't understand why we are still relying on crazy services like rapidshare and megaupload to share big files like ROMS. They usually don't work from the device, are slow, and the advertisements can be a bit annoying for all involved. I would like to suggest that cooks use something like sugarsync. I would love if they used me as a referral, but that's not important.
You can generate public links so that people can download files directly (ppc friendly and no ads) and it can be used as a sort of backup. Anyone can create a free account that has 2GB of storage.
In the meantime, I'd be more than happy to host the ROMs on my account so that the cooks can post direct links without the hassle of creating/maintaining another account. Just PM me if you want me to host your ROM and I'll set it up and send back a link for you to post within 24 hours.
Here's an example of the way the downloads work:
Calkulin's Touch Pro2 23506 Manila 2.5 ROM