Pros & Cons
Yammer is very easy to use. I can setup groups and customize it easily for our requirement. It's good to have all information in one location. Now, information is not scattered all over the places as we have organized all the information in Yammer.
I don't have any issues with Yammer. It is a great product.
Recommendation to Others
We have centralized our communication with Yammer. No more redundant document siting in oue emails. All the documents and information has been updated in Yammer and now it's quick to get all information.