Mark, I think the comment to which you're referring has to do with shortening eBay links. I definitely recall Frank discussing that in a recent previous post.
What he wrote was that with eBay links, you click on the Bid link on the item page. When the who has bid page appears (even if no one has bid), the browser link will be much shorter. Highlight and copy the browser link that will appear at the top of the page. This will be shorter than the item description page link. Then paste it into your reply box on the GMB.
If Frank has a way to shorten other potential hyperlinks, I haven't seen it recently. But, I am sure he will reply when he sees this exchange.
This specific thread is stretching too wide and extending beyond the normal monitor boundaries because of the original photo in the first post; it was definitely copied from a web photo with a very long link.