users = ['BBCWorld']

    username = browser.find_element_by_class_name("js-username-field")
    username.send_keys("username")
    password = browser.find_element_by_class_name("js-password-field")
    password.send_keys("password")

    signin_click = WebDriverWait(browser, 500000).until(
            EC.element_to_be_clickable((By.XPATH, '//*[@id="page-container"]/div/div[1]/form/div[2]/button'))
        )
    signin_click.click()

    for user in users:
        # User's profile
        browser.get('https://twitter.com/' + user)

        time.sleep(0.5)

        SCROLL_PAUSE_TIME = 0.5

        # Get scroll height
        last_height = browser.execute_script("return document.body.scrollHeight")

        while True:
            # Scroll down to bottom
            browser.execute_script("window.scrollTo(0, document.body.scrollHeight)")

            # Wait to load page
            time.sleep(SCROLL_PAUSE_TIME)


            # Calculate new scroll height and compare with last scroll height
            new_height = browser.execute_script("return document.body.scrollHeight")



        # Quit browser
        browser.quit()