The effect of endless scrolling = Bad for Google / SEO

[awesomerobot (Kris)]

This has been covered here:

How public Discourse sites are indexed by search engines like Google

While Discourse is a JavaScript application, it can still be crawled by Google and other search engines. Discourse is designed in such a way that the entire content can be crawled by bots with or without JavaScript. We ship NOSCRIPT tag containing topic list and topic content. Additionally old browsers with old JavaScript engines will fallback to a simple read-only view. To view the JS disabled view, you can either install a plugin in Chrome/Firefox that disables JS or disable using these in…

Also check out:

Adding Support for Search Engines to your Javascript Applications