Most of the ads in Adveryday or other classified sites are posted by the advertisers themselves, to advert their OWN products, OWN services etc. This is nothing new.
Today, we would like you to think advertisement THE OTHER WAY. Post an ad that is not necessary yours. For example, there’s a new dessert shop newly opened nearby your place, post it as an ad! Someone is holding a party somewhere? Post it as an ad! There are tons of stuff that you could post. Although we are in the era of technology, there are still a lot people, especially the elderly, who have not been utilizing the power of internet to publicize their shops, products, or services. And you could help them.
When you post them, it should look like an ad, and it should be some information that others would want to know (Not including gossip or scandal :P).
Overall, it is almost like a information flow platform, more and more information could flow in, and you will never know how each of them could benefit someone else :)