It will highlight differences between different phone models when you compare them, improve gallery (deprecated), etc..
Will improve some of GSMArena.com website's features.
For now, it will only:
- highlight differences between different phone models when you compare them
- use a new improved LightBox gallery (this was canceled as it is no longer required with the new website).
Install it and then compare phones. Example: http://www.gsmarena.com/compare.php3?idPhone1=5705&idPhone2=6604
Please note I am not affiliate in any way with GSM Arena website or company. I just love the website and I needed this feature. I also think it should be nice for others to have it.
Feel free to let me know if you need more features.
UPDATE: added support for three compared products