The "new" web version of Messenger was actually launched a year ago, under the domain messenger.com. It has been looking like that from the first day.

Messenger.com was launched on April 8 2015. http://thenextweb.com/facebook/2015/04/08/facebook-launches-...

According to this, the web app of Chat Center was launched on April 13 2015. http://archimedeslabs.com/2015/04/chat-center-rebrands-and-m...

And they both look like iMessage.

The only reason you'd ever lash out at a competitor for copying you is because you have an inferior product overall. If you were winning, you wouldn't care. Build something better. Getting angry about this doesn't help you.

What a troll. His first example is basically saying "you copied us since we both look like iMessage". The rest of the examples don't even resemble one another.