No, not so easily.

The 'page back' and 'page forward' buttons on the browser works because the browser obviously know what page it loaded before, and 'page forward' will work only if you have used 'page back'.

The 'next page' or 'next thread' link is dynamic. It contains information that is dependant on the forum you are visiting (in this case, flyertalk.com) and what topic you are reading (hover over the next thread, 't='), etc. As you hover over 'next thread' and 'next page' in other threads, notice how they differ. Each topic has it's own identifier (in this case, 716849).

Now, if you can find a program that will search a page for the text, 'next thread' and "click" it, that may work, however I did not find anything viable.