##Intrusive Code:
When including code from somewhere else, the script parser will automatically execute it. I really don't want multithreaded code to run for \$n\$ seconds, when I import something.
You should include a if __name__ == '__main__'-block to fix that behaviour. In addition to that, I'd personally extract the last four lines into a separate method.
##Impossible Async:
Let's say I want to run this, and do something else on the main-thread; not possible! You instantly join to the pool after starting to scrape the results.
Instead of that, I'd personally keep the pool open and async, unless explicitly calling a .join method:
def join():
pool.join()
Aside from that, janos makes awesome points, I'd just want to see a little documentation on what scrape_results_page does.
