# Discourse linkback between different discourse instances **URL:** https://meta.discourse.org/t/discourse-linkback-between-different-discourse-instances/76257 **Category:** Feature **Created:** [December 17, 2017, 2:32pm UTC](https://meta.discourse.org/t/discourse-linkback-between-different-discourse-instances/76257 "2017-12-17T14:32:56Z") **Posts on this page:** 1 **Page:** 1
### Author: ![mofosyne](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/mofosyne/32/91669_2.png) [@mofosyne](https://meta.discourse.org/u/mofosyne) #### Post date: [December 17, 2017, 2:32pm UTC](https://meta.discourse.org/t/discourse-linkback-between-different-discourse-instances/76257/1 "2017-12-17T14:32:56Z")
What would be interesting is if different discourse instances can inform other discourse instances that a link was used. This is similar to the linkback protocol, but restricted to a whitelist and to discourse instances only. This should minimise bad actors spamming other discourse instances. This would allow for cross forum collaboration, with not as much technical hurdle compared to actually sharing topics and user accounts between discourse instances: > [@Shared topics between multiple discourse instances](https://meta.discourse.org/t/shared-topics-between-multiple-discourse-instances/67528): > > Continuing the discussion from [Facebook Groups - Zuck is coming for us](https://meta.discourse.org/t/facebook-groups-zuck-is-coming-for-us/64437/23): I take it that this is not going to be a priority any time soon, but I really like this idea of linking different discourse instances. So here is a more specific feature suggestion: multi-forum topics. Not sure if and how this could be implemented, but the idea would be that users could request a topic to be shared by another discourse forum, i.e. that the topic would be shown in both forums and members of either communi… Perhaps to minimise whitelist overheads, you could request [discourse.org](http://discourse.org) to send you a whitelist for the most popular discourse sites out there. Then manually add in the smaller discourse instances that your community talks to.