使用体验总体还行，就是有时会加载不出来

It's just a link to their website. The data displayed by the extension is irrelevant. The extension requires you to create an account on their site and give all sorts of extra permissions on your browser so that they can track you. They do all of this without showing you the websites you were looking for in the first place. Useless.

可以分析网站情况，就是有时候有点卡。

In their Browser Addon: If you want to give a bad review, they redirect you to Google Docs. If you want to give a good review, they redirect you to this mozilla page. This way they filter out people who want to leave a honest, bad review...

OK

Sehr hilfreiches Add-on, sowohl privat als auch im professionellen Umfeld.

Got captcha for every request after browser start. Then got captcha after 5-10 queries. But chrome extension work good.