There's only one problem I have with this extension.
Whenever I open Firefox and it restores my previous session, this extension replaces the tab I was on with a "New Tab" instead of loading said tab.
Apart from that, this is the lightest Speed-dial-like extension I've found so far, no need to create an account or do some random stuff before setting up like you want it to.
Would really appreciate if the developer could take a look at that issue though.