No, YOU (and many other people, of course) didn't know who Joe Webb was. He has been talked about as the Vikes'
"QB of the future" since his performance in mini-camp in June. If you want to notice value before the other owners in your league you will need to do more homework. Notice how Josh Cribbs is referenced as a comparison in this story from June:
http://www.startribune.com/sports/vikings/...ArksUUUycaEacyU
Josh Cribbs is a QB/WR who can also lineup at RB. He is listed as WR most places. If they discovered he was a really good thrower like Webb apparently is, his FF value would go way up because you would be able to use a player generating QB points at the WR position. This has been the case for a couple of years with Cribbs. Kordell Stewart was another example.
It is not about who notices the loophole, because it isn't a "loophole". It is, like everything else in this hobby, about recognizing fantasy football value before your leaguemates do. Somebody in each Yahoo league figured out that Webb had potential hidden fantasy value this season because he was listed as a WR but had impressed the coaches in the summer enough that Minnesota
considered him to be a promising QB. Webb was
the third QB every week of the season, so him being at that position was no secret. You could read his name every week on the inactives' list,
each time listed as a QB by Minnesota. I don't think there were any Vikings' homers who were unaware of Webb.
When Favre began taking a beating this season, the value of both Tarvaris Jackson and Joe Webb went up. On Monday, Dec 13 when Tarvaris Jackson went down, Webb's Yahoo value jumped significantly again. If everybody in your league was appalled to discover that day for the first time that Webb was listed as a WR, they could have complained to the commissioner and undoubtedly could have asked for an in-season ruling that declared Webb ineligible to be played as a WR in your league. Once an owner picked Webb up, whether it was before Dec 13th or afterward, you can't change the rule to penalize the owner who understood Webb's value first. Changing the rule after he's been picked up amounts to cheating, whether it is done unilaterally by the commissioner or collectively by the other complaining owners. I would immediately cash out and leave any league that seriously entertained doing that.
Anybody whose feelings got hurt because Joe Webb wasn't on their radar until last week should do more homework and less complaining IMHO.