I observed the same thing and it was only when you told me the main domain that I found their website.

> Something tells me they're intentionally registering these "alternate" domains specifically for spam, to avoid tanking the email reputation of their main runanywhere.ai domain

This is a really bad look on them.

https://www.whatsmydns.net/domain-age?q=buildrunanywhere.org and https://www.whatsmydns.net/domain-age?q=runanywheresdk.com

Both these domain were registered only 36 days ago

Their main domain had been around for 6 month (216 days) tho:- https://www.whatsmydns.net/domain-age?q=runanywhere.ai

(I also couldn't see any post created by them on YC checking algolia from their website fwiw)

Seeing their star history on their product, I see some few interesting observations[0] Their star history was almost horizontal between december and february until it got vertical all of a sudden.

[0]:https://www.star-history.com/#runanywhere.ai/runanywhere.ai&...

I looked through their linkedin and found this website owned by them as well https://www.openclawpi.com/ and using the YC brand here as well. (registerered 26 days ago)

This website looks fairly AI generated to me as well and there are some bugs within the original website as well which I am now incredibly more unsure of if generated by AI or not given the similarities between the two websites UI/UX as well.