I agree with the both of you but as in everything else there are exceptions. Yes alot will only last a week or so thats inevitible but all these big teams had to start somewhere too.
But for those starting a team, don't just think about members think about what you can offer your members, recruitment policies etc.. as discussed above. But one of the most important factors is also providing for your team, such as setting up a site, forums game servers and possibly voice comms such as ventrillo or teamspeak. Organisation is also a key factor you won't get far if there is a total communication breakdown or your team only plays the game once a month or so.
It's kind of a give and take thing, what can you give your potential members and what can your potential members give to you. And as said don't just take on anyone since that will only cause trouble trust me! lol Get to know your drivers, watch them race engage in coversation with them in servers (when the race is over :razz
. Then if you are sure they would be an asset to the team throw an invite their way.
The whole make a forum post now your an established team is pretty silly. In order to get something out of it you need to put a hell of alot in, same with any gaming community. I'm trying to do the same with my team, yeah some might class it as one of these new "forum teams" but i spend many hours a day keeping the team organised, working on the website thinking of ways I can generally improve the user experience etc...
So in conclusion I would reccomend taking time before starting a team it really isnt something you can just jump into and then expect to get far.