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I think these kind of team-ups have been around for a while, eg there was usa.nano.Nemo which was in package usa because both creators were from the USA. I think wiki/robowiki package is great for stuff which is specifically released as public domain, like BasicSurfer, as well as test bots like DrussiousGT, and code/utils which is meant for people to use and hoist, but I see no problem with collaborative bots.