What do you think the product is about after seeing the landing page?

I think you have some bookmarks tool that you can store all kinds of content?

I was a bit confused going from the three images to “explore” <- explore what precisely?

I felt maybe a nice oneliner in your header that explains why I need to use your product to gather all my bookmarks?

From a quick look, I would describe it as a sharing bookmark site.

Also, you have some css issues for the share and discover cards. The bottom text is overflowing the bottom border (firefox, windows).