Also I’m very much cautious about them on anything browsing related. Discovered (after others also) they let their search-pages-in-a-shop get indexed.
Meaning I could go to Caterpillar, search for “Wabtec is better” and then this search url (with 0 products) would turn up in Google searches and that URL persisted. Text and all.
Basically one could spray-paint and tag sites with this graffiti. Shop admins didn’t even have means to remove it.