Not picking on any contributor. This question...
Where can I buy “blocking” stickers for my left-hand drive car's headlights so I can drive in the right-hand drive UK?
...is fairly valid, as it affects travellers choosing to drive when visiting countries. The accepted answer, however, linked to a page for a specific product on a shopping website. I personally felt that a less biased answer would be to just mention the name of the product - 'headlamp converters', in this case - without linking to any particular product.
Should shopping links to specific products be allowed? What if the product is one-of-a-kind, sold only by one/handful companies?
Related: Q&A is Hard, Let’s Go Shopping!