Good to have you with us! Sadly there is no feature in the phpbb software which allows you to view a page with only the threads that you are watching. However, if your browser has cookies enabled, you should be able to goto the main page “http://www.ilovephilosophy.com” and on the right hand side will be a list of all the threads that you are watching. That list is just under the “Recent Threads” list. Have a go.
Also, there is a button at the top of the main forums which says “View Posts Since Last Visit” which may be of use to you even if it doesn’t show all your specific watched threads. Perhaps in future versions of the software it will be possible to view only the threads you are watching.