Hopefully some collaboration can be made between swfchan and the IA. swfchan claims to have 217753 flashes: http://swfchan.com/ (Edit: NSFW. Would recommend an adblocker before opening, at least.)

It archives flashes (and their threads!) from /f/ and others. A great historical resource.

The presentation of swfchan may not be for everyone, but it does hold an immense amount of data.