It’s a sad, sad state of affairs when your best alternative for frequent file transfers between your local computers is a shareware program that costs $37 for 3 to 5 computers.
iChat can transfer files over Bonjour for free, but you’ve got to manually accept each transfer on the target computer (and you have to hack your Address Book if you don’t want all computers to have the same name in the contact list). Adium can’t transfer files over Bonjour, and when I tried creating an MSN account per machine the files were transferred through Microsoft’s servers. And, as for other dedicated programs (like DropCopy or the new Picnic), there are always bugs or complications. Geez.
$37 for 3 computers, $66 for 6… if Leopard’s Finder keeps Apple’s promises (and I’m not getting my hopes too high), that would justify a fourth to a half of the upgrade price.