There is an option to "like" a post in the Timeline by using the thumb icon. If some users like the post it's visible as a message "x Person like this".

Would it be possible to show exact user names e.g. when placing mouse cursor over the message?
Needs Votes
Ideas Administrator

Thank you for your feedback. Currently this is not in our roadmap; however, we are tracking it and if we get more feedback and votes, we may consider it in the future. 

Paramita Chatterjee
PM, Microsoft.