It doesn't work that way because they just create more accounts.
This is what I posted in another thread:
Of course, SE could also just have a bunch of tickboxes in settings to control the problem too:
[ ] Refuse all party invites
[ ] Refuse all friend requests
[ ] Refuse all free company invites
[ ] Ignore all tell's that are not part of the FC/Linkshell/Party/Friend list
[ ] Ignore all tells from outside your current zone
If we want to get really nitpicky you actually make a permission table:
http://i60.tinypic.com/xdgjls.png
