The discussion thread that I think you are referring to is https://www.antique-bottles.net/forum/Recent_Pot_Lid_Scam_on_Ebay/m_14816/tm.htm - which highlights a scam on eBay where someone 'stole' a pot lid photo from Deantiques and posted it for sale on eBay.
Deantiques is an excellent pot lid sit that lists information about pot lid scams such as reproductions and fakes as well as information about modern lids or re-issues, etc.
In addition, the site provides a good overview of pot lids and pratt lids that were used in UK, USA and Australia.
