How do search engines index forums since there are multiple urls for posts?

There are numerous different urls regarding posts for a forum.As an illustration, you might specify your post id from the url, or even the online community and subject matter id, or put a shifting to jump to somewhat of a specific comment, etc…Research online engine views variables from the url seeing that making the actual url a different url, so how can search motors index forums since you’ll find multiple urls to get posts

You ponder how Search engines like yahoo index dynamically made URLs Well initially, search motor will in general see each one URL as a page.For every variation from the page’s WEB ADDRESS, the Google search indexes it like a separate web page.For model:
http://example.com/forum.phptopic=42
http://example.com/forum.phptopic=42&jumpto_post=5

topic=42 may be the ID from the forum-topic
jumpto_post=5 explains the script which usually post for you to jump to be able to (in this particular case, the 5th post while in the topic)

For your requirements, its identical page; but towards the Search Motor, it’s a completely different site.This is one reason why Search Motor discourage such URLs in addition to instead motivate “clean” URLS.