If anybody has used any Smart TV Upgrader? Is it worth to upgrade TV to smart by this type of device? 
They generally feature following:
Directly Connects To Internet & TV
Open Facebook / Twitter / YouTube and More Directly on your TV!
Based On Android 2.2
Always Connected, Web at Your Fingertip
Watch YouTube Videos
Listen To Internet Radio
2 USB Port + SD Card Slot to Play Videos/ MP3 / Photos / Flash Files
1 Ethernet 10/100 Port
Support Reliance / Tata Photon plus and other data cards
Wifi Support
Intelligent Suggestions, Simple Shortcuts
Capability to Run Android Applications
Multiple Options for Network & Peripheral Connectivity
Multi-Format Media Player for Offline Content Play
Google Search gives many sites starting at 2.5k+

They generally feature following:
Directly Connects To Internet & TV
Open Facebook / Twitter / YouTube and More Directly on your TV!
Based On Android 2.2
Always Connected, Web at Your Fingertip
Watch YouTube Videos
Listen To Internet Radio
2 USB Port + SD Card Slot to Play Videos/ MP3 / Photos / Flash Files
1 Ethernet 10/100 Port
Support Reliance / Tata Photon plus and other data cards
Wifi Support
Intelligent Suggestions, Simple Shortcuts
Capability to Run Android Applications
Multiple Options for Network & Peripheral Connectivity
Multi-Format Media Player for Offline Content Play
Google Search gives many sites starting at 2.5k+