Not just Google. A couple weeks back I saw pretty strong evidence of OpenAI ingesting an HN comment of mine and regurgitating it in ChatGPT within 10-15 minutes of posting.
I asked Deep Research why your comment appeared in it's training data, and it said it doesn't generally have near real time data in it's responses unless it's conducting a real time web search. It thinks it found the answer from pulling together and combining these sources: https://www.animatsiya.net/films.php?search=%D0%B3%D0%BE%D1%... + https://ask.metafilter.com/182144/Whats-this-cartoon-with-a-... + https://www.city-data.com/forum/tv/2017670-dies-anyone-remem... - however it also said it has been trained on youtube comments generally and it's hard to know how many uploads might exist with comments referencing the time stamp, as well as forums that have been included in it's training data that are not indexed by google, but that it itself didn't think it was coming from HN. Who knows. ¯\_(ツ)_/¯
The suspicious part is that ChatGPT did not have any kind of answer when the parent poster checked before posting. Yet soon after my reply it suddenly not only had the answer, but also used many of the same words and had the exact same timestamp. A little too close to be a coincidence, IMO.
