I used to use Feedly.com to subscribe to RSS Feeds of some of my most favourite websites and read the updated happily without bothering to go on to each of the favourite websites everyday.
After sometime, I found ***Google Alerts***.
Its an awesome tool. I have subscribed to some more than 100 Google Alerts – keywords and Google once a day sends me an email stating all possible world wide web based updates about the topic. I have now a separate email address dedicated to Google Alerts.