Install Better Comments Component for Existing Joomla Site

PROJECT DESCRIPTION: We need an better comment component for an existing Joomla website. The domain name of the Joomla website we're referring to is attached in the "[login to view URL] file. We need comments for Videos and for all Articles and we'd like to have as many comment features as possible but the main comment features we need are: -users need to be able to leave comments as guests (without registering on the site) -users need to be able to rate comments, articles, and videos using the comment component -users need to be able to track the comment conversation so when they leave a comment on an Article or Video and then they leave the site, the site notifies the user via email when someone replies to their comment so they know when to respond again -users should be able to share their comments on Facebook, Twitter, and Google+ -users should be able to invite friends to comment on an Article or Video #OUR FREELANCER TERMS: -Payment is thru Freelancer only. -Provider must submit samples of their best Joomla comments integration for priority bid consideration. -We must be able to visit the Joomla site URLs you submit from your portfolio. -Absolutely no branding. -We have a 5 out of 5 feedback rating on Freelancer and we'd like to keep it that way, so please, serious and experienced bidders only.