Android: Widgets are awesome, but if you're keeping your eye on a service or website that doesn't have a widget in the Play Store, you can make your own with Meta Widget.
To get started, just open up Meta Widget and navigate to the site you want to "widgetize". Then, when you get to the page you want, check the box in the lower left corner and tap somewhere on the page. It'll surround that element in an orange box, after which you can move the selection tool around with the arrows at the bottom of the screen. When you find the element you want to put on your home screen, tap the plus sign and go to town configuring text colours, widget alignment and more to make it look just right.
It won't work with every single site out there, and unfortunately it takes quite a bit of trial and error, so be prepared to do some serious tinkering with this app. The more a site is formatted for mobile, the better it will probably end up (RSS feeds often work well too). Check out the video above to see a demonstration, or hit the link below to download it for yourself.
Meta Widget is a free download for Android devices.