The link should work just fine.
And dominance can be raised by being uh, dominant. It's only implemented in a few places currently though (try Baileys diner route).
All well and good but for some reason when I click it it says "Unable to accept invite" any further help?
As for the dominance I guess I had better explain a little better,I have been through Baileys route to the end and chosen the most dominant options but since the stat was still so low I thought I might have missed something.