Tab Garbage Collector extension closes tabs that have not been viewed for long time.
The idea behind the extension is that tabs that are not used are, well, useless.
Sometimes I find that I have tabs that I've opened a week ago and I have left open.
The visual clutter that comes with this is quite distractive.
The extension marks the time when the tab was active and closes the tab when it has been
inactive for specified time. Pinned tabs are not closed.
New version adds a list for viewing 10 last removed tabs.