eula

[Sir Taleisin The Seer]

I would say that it does not infringe on the EULA, The part that reads "otherwise impact gameplay" having simple windows that offer information like the mapPOI mod would be a violation. I've doubts SOE would ban over half their population for it.

~EDIT~ Also SOE offers the ability to autodecline group invites in the default UI so you could claim that as a loophole if needed.