To be seen by everyone
This sentence isn’t just said by teenagers, but by middle aged people and elderly, as well. In Serbia, there are as many Facebook accounts as inhabitants. Everybody really is on Facebook. And, where there is everybody, there are advertisers, as well.
However, that isn’t so simple. It is necessary to be familiar with certain techniques: reading the analyses, "hitting" the target audience, creating buyers, addressing people that have already bought the product or read something yours… Only with that knowledge, you can obtain very cheap adverts. Lava NET team will do all that for you. You will be pleasantly surprised by the results. Try advertising on Facebook.