Is there a way for our site's forum members to see all new posts across the site since their last sign-in? Many popular forum software programs allow a member to see all posts across the entire board since their last check in. I'd like to implement that because as it is now too many members homestead in one forum and want to post everything there rather than checking out other forums on our site.
Absolutely, but strangely it's a little known or promoted feature of the Lithium platform.
The page you are after is .../t5/forums/unreadpostspage/tab/message and you can tab between all posts you haven't read yet, and all threads you haven't opened yet.
So the URL here on the Lithium Community is http://community.lithium.com/t5/forums/unreadpostspage/tab/message
Hope that helps,
You could also add the Unread Topics or Unread Posts component to your homepage via Studio. You can find out more about the components here (scroll to the bottom and click the PDF file for your version): http://community.lithium.com/t5/Pages-and-layouts/About-components/ta-p/134343
Hope this clarifies things a bit more!
Sorrry for not being clear enough @jnmeade, as Julie says I was just using the Lithium Community link as an example.
Hope she has cleared it up for you now. Let us know if you have further questions.