I have a real estate site that we require the user to login after viewing 3 properties. Is it possible for Google to index these property listings while still keeping that functionality in place? What is the best way to handle this on the up and up with Google? Thanks!
This sounds like a great use-case for First Click Free - which would allow you to show the full content to Googlebot, while limiting the number of times a user can access content from there.
There is something called submitting URL Parameters in google webmasters.
If you want the bot to read the contents inside a page that is shown after login, you can submit the url of the php or link that handles the login form along with parameters of login.
Hope that helps.