It is one of the best ways those who want to run a forum but are down on money to invest in generating content have a way to do it without spending money. For as long as they are willing to post contents on other people's forums, they will get the same thing in return for it.I haven't done it online but definitely did offline. But I see it being done online very well recently especially with posting exchange services by forum owners. It's how they add contents and activities to their community without having to pay money for it.
Apart from posting exchanges carried out on many promotional sites, I don't think there are many barter trades people are into now online. It might be carried out offline which I'm not sure but as for online, there's none happening to my knowledge.I haven't done it online but definitely did offline. But I see it being done online very well recently especially with posting exchange services by forum owners. It's how they add contents and activities to their community without having to pay money for it.
I have done the same thing with my own forum too. It only require your efforts in making posts on other forums for their owners to return the posting for you.I have exchanged forum interactions with someone before. It simple, I post on the person’s forum and they post on mine. There was no monetary value exchanged.