Beat me to it Baronson ...
Is this collusion?
A trade is completed ...
1. By two family members.
2. By one of my rivals.
3. Involving a player that I wanted.
4. Giving a good team a good player.
5. Giving a bad team a draft pick.
6. That I would have never done if I was the guy.
7. That is against an imaginary rule that has never been discussed.
8. On a Tuesday.
9. By a guy that I'm playing against this week.
10. To cover a bye week for each team.
No.
A trade is completed in which the two owners are acting to improve team 1 dramatically at the expense of team 2 and no reasonable value can be found in the deal for team 2, except possibly outside value (like a share of the winnings, etc.).
Yes.
There is gray area. But not all uneven trades are collusion. Some are just bad deals, or are just deals you wouldn't do. Collusion is sneaky, shady, rule-circumventing, and obvious if you are paying attention. I'd say if you have to ask around for other opinions on the matter, then it's probably close enough to OK and isn't collusion. If you think they are cheating, ask them for an explanation in front of the league. Be open about it all and look for the value for each side and why they may possibly want to do it. When you do find those owners that are determined to cheat, get rid of them.