Friday measures employee happiness on a weekly basis, analyses it and then feeds it back anonymously so that everyone across the organisation gets the insights they need.
A google chrome extension would be cool. A live chat on your website would be cool too.
When I have set up. Some of the people I have invited did not receive the invite to the first setup question..
Pros:Super user friendly and beautifully designed. Easy to setup and invite people in your team.
Cons:Would have love to have free typing option/ feedback question for them to share their feeling if they want to.