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CloseReview for WebApp Tabs by Mike Pretzlaw
Rated 4 out of 5 stars
It is a very nice extension if you want to keep everything social in Thunderbird. Unfortunately every new Tab like Facebook will cost you great performance.
Don't use Facebook in it, because this means up to 50% work load on your CPU. G+ with Twitter, HootSuite and Google Calendar open will cost only up to 20% or 50% when browsing.
In general: It is not good for permanent browsing sites because your machine goes hot with that. For simple pages and light status updates it is okay.
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