Great extension. Provides great flexibility in handling both links and bookmark folders. Specifically,

1. When opening links, new tabs will be opened immediately after current tab.

2. When opening a bookmark folder, new tabs will be opened left-to-right in the exact order they are stored in the folder. In contrast, many other extensions will open bookmarks in reverse order, due to adherence to the first rule. Personally I find this extension's handling of the bookmarks more intuitive.

For years this tiny and barely noticeable irritation didn't bother me much at all. So what if some difficult to describe browser behaviour wasn't exactly as I expected.
Yet every time I opened a few tabs I had to do that small adjustment. What is wrong with you brain? Get over it.

Then one day, I found someone's project from four years ago, and:
[current tab][tab3][tab2][tab1]

"huh neat" I say to my brain, but my brain is screaming at me "Behold the beauty! Order is preserved!"

I didn't realise just how happy this made my brain. Thanks.

None of any other add-ons that I tried worked as this does like I expected
Pretty much useful if you open a bunch of links as background tabs and you want to switch the last opened tab "immediately"