@Garry Huang : the comparison is collaborative so everyone can edit it.. (I think there is no better way to be objective...). Zopim and others already came to update and complete the comparison table... We can not remove our live chat solution to help SocialCompare users for one specific page... (but I understand that it could be confusing).
This socialcompare page isn't extremely objective - they installed an Olark chatbar directly on this live chat comparison site?
i use this for my website. love it as it syncs best with my IMs.