Just out of curiosity:
I put a link to a free-for-non-commerical-use web application I am affiliated with in the community ads section.
Now a moderator locked and deleted it telling me rules I did not read anywhere:
Ads for services you are affiliated with - especially for commercial services - are absolutely prohibited.
The application is similar to Dropbox which seems to be tolerated in the community ads section.
My question:
Is there kind of hidden (at least to me) policy page that states the rules and explains also why Dropbox seems to be OK?