I've added a tutorial just recently on how to add tags to your mods. Check it out here[docs.google.com]!

Someone should sticky this. I wrote a PSA in my voicepack tutorial.

Not sure where this MeatFactorySighted cue plays, since it is not mentioned in any of the *.uc scripts in the SDK folder.

Probably has something to do with the Kismet in each of the *.umap files.