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Google Chrome pushes ahead with targeted ads based on your browser history
(www.theregister.com)
This is a most excellent place for technology news and articles.
There is an extension for tab grouping (simple tab groups). It and ublock origin are the two main ones I install first when I install FF fresh.
Side tabs I'm not sure of, but I'd be more surprised if there isn't an extension for that, too.
Even if there was it's going to bloat the fuck out of the install, unfortunately.