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I'm using Noah on a couple sites. I use the multimenu and have a link to the Noah separate from Xoops.
I've not had any problems, except I had to spend a couple hours making the Noah pages look like my XOOPS pages.
Seems to work fine, but it does require separate registration and it is a very simple registration. Security is pretty low I'd say.
I used the MyAds back in 1+ versions of Xoops, but it was not a well supported mod even then. If you're a good coder you might be able to do something with it, but frankly I think it will require some very conscientious efforts to make it a viable mod.
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