It looks like XIFF is currently listed as having no code at all, which is definitely off by a bit ;)
Any ideas on what's going on? It's entirely actionscript, so maybe it's related to ohloh recognizing .as as it seems to have started doing recently?
On a related note, although new AS in SparkWeb is being recognized, it looks like most of it still isn't. I imagine this is just a matter of waiting for a full update, but on the off chance that it's not I figured it was worth mentioning.