Thanks a lot Guys!
Of course, a kind of announcing, example: ''Lite Challenge Open" in our own cartographer's mailbox, or in our personnal page somewhere would be awesome. When something opens for the members, we would receive a kind of personnal notice from admin, in some way you see fit.
Of course I dont have any problem looking regulary at all the pages, but it is easier to follow when advise. Same principle could be apply to treads. I am on a Excel forum and on the threads I post, each time someone answer, I receive a notice in my personnal mail. I like this because I dont have think all the time and then go to see if someone answered me. When you work on a project and you are anxious for comments, this can get obsessive!
Anyhow, I'll check from time to time, as everybody do. Not a problem and thanks again!