I've written a small userscript that notifies you in the title of the page wether and how many new post there are on your watchlist:


Download it from:
Greasyfork
Openuserjs

This application requires you to install Tampermonkey for chrome:
https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo?hl=en

OR

Greasemonkey for firefox:
https://addons.mozilla.org/en/firefox/addon/greasemonkey/

Enjoy

If you like it a lot please consider a small donation... Every satoshi helps me 
BTC1LsHaLLozHBHYrfVG2GTSsrFW351Xbeds9