i know that’s the motive, but how will you ensure that no one cheats?
Frankly speaking, not everyone is honest.
Currently, people cheat quite easily in Long Challenges. Whatsapp will make the process faster and might facilitate cheating in cook-offs and lunchtime also.
Just assume that you’re offline for a bit, and haven’t checked whatsapp (Long challenge is for 10 days, so quite possible). If someone cheats, you may kick them out or something, but if he or she has already got the hints, what then?
I am not very sure of this idea of yours. Though the motive is extraordinarily helpful by providing better resources to people who don’t have access but want to learn, but you have yet not convinced me how exactly you might disallow cheating. And say you add everyone to a whatsapp group, then even if they follow the rules of that group, they can still always discuss on personal chat