G+ messenger: how to access from desktop computer?

G+ messenger app within android G+ app works fine. However, I would like to be able to run Messenger on my desktop computer as well. It is much less cumbersome to type there. However, I don't seem to find any possibility to access it via G+ app in my chrome desktop browser. Also, there is no external app to run it. The only thing available is google talk, which does not include/show any of my messenger-conversations. Thanx for help!

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