JLike is the perfect feedback enhancement for my Joomla/K2/JFBC/Jomsocial site. Once logged in, users can easily like or dislike an article. The installation was a breeze. My very busy site had no problems uploading and installing it. The configuration was very easy and intuitive. My site went through several Joomla and template upgrades. Whenever there was a problem, the techjoomla guys helped efficiently and promptly. Documentation? I never touched it because I didn't need it. The backend is so user friendly and intuitive.. Given the quality of the product and the support, JLike is definitely worth the money.