Being smart in terms of the human game (which is 99.9% of the entire game) does not make a difference in Invasion style stuff. And I do mean that you might, in fact, see people try to use the same strategies that would be useful against humans (like, oh, subterfuge, wordplay, and all that blah blah happy stuff) against the invader factions. And while Dwilight is not Invasion Island Beluaterra, a similar phenomenon exists there with people interacting with daimons.
Again, egos. It's the lols. We all think we know a lot, but really, we don't, and it's only in talking to other people who are in the same boat as we are that we find out just how little we actually know. But we're all afraid to do it. Or we revel in our supposed superiority of knowing something that we think we alone know when in fact...we still actually know nothing.
Oh yeah, and on my end: Dude, I play an adventurer. I don't know anything. People don't talk to me except to tell me where the next monster/undead group is or where some random sage is that doesn't matter anyway because I don't have a unique item on hand and by the time I reach the region he's gone already.
So there's my contribution, which is...Zero. But hey, I would say that my zero contribution is actually better than everyone else's so far (Except those guys who are updating the wiki page. Good job for those dudes.) because I am at least honest about what I know (Nothing) and what I don't know (Everything).
And yes, I know there will be people who will say "But my character's supposed to be an evil conniving !@#$%^&." Yeah, good for you. It's also ICly realistic to ostracize those characters, and I will state right now that if anyone does not immediately exclude such characters from interacting with everyone else in the 5th Invasion, then that is wrong (Unless their characters are also the same, in which case my statement only applies to people who are not playing Evil !@#$%^& Characters)
Strangely enough, for some reason we generally accept evil !@#$%^& characters a lot more than is realistic. Some even have positions of power. Now ask yourself: Seriously, would you really elect an ex-con to represent you? Because in game terms, that's pretty much what you're doing. But hey, if you're that much of a naive idiot, that's cool too. Just remember that those foreign princes aren't real princes. And if they are, they probably don't need your account number.