I don’t mind somewhat customized ads on Facebook and elsewhere, but I’d prefer a middle ground between irrelevant and creepy. The item on the image is one I was viewing on the arts-and-crafts marketplace Etsy the day before.
Suggesting to “Check out this unique find” seems a bit much. It’s not really a unique find since I already found it earlier. If the line wants to be that personalized then how about “This unique item is still available.”? For some reason I’d find that less creepy although still intrusive. The way they have it now seems disingenuous. It is as though the system is pretending that it doesn’t know that I already saw the item. In reality, all this does is remind me that it knows way too many details about my online actions. (I guess for that reminder: Thanks!) I really ought to use a different browser for FB…