A little ridiculous? Once I convinced a civ to hand over everything minus planets - all their techs, ships, including colony ships, credits - for a tiny planet that would be of no use to them, and flip back to me in 10 turns. It's completely ridiculous! 
The game's not finished. I would advise against using exploits because they're no fun. If this were a complete game, it would be a big problem. But as we still haven't received the updates to the AI that will teach them how to properly calculate trade values, I think we should simply ignore the fact that it's too easy to get their stuff and just not trade with them. You have to play the Beta knowing that parts of the game are not fully implemented. That doesn't mean don't discuss the issues, though! If you find something nobody else has you can make a valuable contribution!
