Once upon a time if you wanted to share files too large to send as email attachments, you would upload them to an FTP site. But not everyone has an FTP site lying around, and so web services like YouSendIt, MailBigFile, and Driveway have stepped up to the plate. While YouSendIt it probably the most familiar name of the bunch, the service only lets users send files up to 100MB for free. For larger file transfers you need to pay a fee.

EatLime has a 1GB file size limit (although you need to register for a free account to send files larger than 100MB). That alone doesn't make the service unique. But EatLime also has one killer feature that most other services lack: You can share download links with others before you've finished uploading a file, and they can begin downloading while you're still uploading.

EatLime, formerly known as YouSwap, also has a nice clean interface, easy to use tools for managing your files, and a contact manager for keeping track of the folks you regularly share files with.

Update 5/08/08: When we first took this service for a spin in March it was awesome. But in the following months we've had problems with EatLime corrupting files we've tried to share, and suffering from downtime. The service has a lot of potential, but right now its performance is just too inconsistent to recommend for sharing important files.