First off, I don't play for money. Ever. It does strange things to people, and it's just not worth it. It's stupid watching friendships get strained over a lousy $50 or whatever. Now, if you do something like the WCOFF, then absolutely you do NOT help your leaguemates, because that is first and foremost a competition. I don't participate in Fantasy Football "competitions", I participate in Fantasy Football "leagues", where the goals are not to win at all costs, but to make friends, have a lot of fun, and earn some serious bragging rights.
To that end, I will help any and all of my league-mates to the utmost of my ability to do so. I had a draft last year on a message board, and the message board went down, so I personally registered all of my leaguemates over here and we finished the draft up in the Mock Drafts forum. And I hope that they did some exploring while they were over here. If one of my leaguemates is out of town and cannot make the draft, then we will have one of the consistantly better players in the league make his selections for him- and when we're selecting for someone else, we play it as if we were selecting for our own team. If I honestly thought he was the best guy on the board for that team, I would select the player I had an eye on for my own team in a heartbeat. As an example, two years ago in a startup Keeper league draft, someone drafted Antonio Gates, a sleeper TE he had a big eye on, for another team in the league.
Again, as far as I'm concerned, fantasy football has three goals. The first is to have fun. I don't know about the rest of you, but I don't think it's "fun" to play against a league full of people who have no idea what they're doing and just romp through undefeated. The second goal is to make friends. Personally, the best way to make friends with someone is to HELP THEM OUT. The third goal is to earn some bragging rights. There's nothing to brag about when someone only loses out of sheer ignorance. If you want to brag, then you teach everyone in your league everything you know- you make sure that they come into the draft more motivated and more prepared than any owners have ever shown up to a draft before- and then you still put together a championship team and beat the snot out of them with it. *THAT* is something worth bragging about.
Whenever anyone posts that they have won 9 of the last 10 titles, or 6 straight titles, or whatever, I think to myself "Why are you bragging about how much your leagues suck?"