Challenge submission

When I am posting a challenge I have to link a writeup file. I read about what it should contain but should it contain information about how to solve my challenge? Also I must link a website with my file. Could you suggest a good website about file sharing?Thanks in advance., mediafire, dropbox, google drive and so on.

Thanks @PapyrusTheGuru . I appreciate it

@K1ller You’re welcome - Hope your challenge gets accepted.