> on what basis would YouTube suggest videos?

Your subscriptions.

that's not what they meant by recommendations from subscriptions.

The OP meant that youtube scans the videos that belong to the subscribed channels, and suggest more videos that have similarities in topic or idea, from different channels (that have not been subscribed).

Exactly.

Or maybe the subscriptions page... Third option from top.

Liked Videos playlist

suggest it based on the user's subscriptions.

They could just show the same page you get if you aren’t logged in.

They can suggest videos popular in the users's location.

I'd rather they don't.

It's always a girl playing guitar very well but you can see her nipples through the top and the camera is set to show you her panties up her skirt.

I don't trust myself not to click it every time.

There girls know what they are doing, who can resist guitar playing?

Please just no. Just open youtube in new private window and see what content is suggested...

Would rather not have a bunch of freaky gaping mouth sex doll faces showing up every time I open youtube.