There's been a bit of discussion on another forum about this.
If you become a member on, say, the 20th of the month, should you be allowed to post your scores for the 19th of that month?
Just after some other ideas.
I see no problem with someone posting their month's sessions prior to joining say by the middle (e.g. 15th) of said month, unless of course they're Dutch then Frant's ruling would be invoked 
i see its pretty simple. Once you join up you can post from that date forward. What competitions can you compete in before you have registered??
so i can post times from july 07
And if the site currently allows you to post for the whole of the beginning month, there's no new work for Nebs!!!!
I'd go with whatever the site currently allows.
I certainly see no need to make alterations just to restrict a new member to only posting after the day they joined.
I dont think your results prior to GTC receiving the waiver form should count.
just my thoughts
Doesn't bother me, but if posting sessions from earlier that month encourages 1 person to join up then I say let ém post
