"Hey everyone, I'm working on [commercial product]" from someone who isn't already an active member of a community will be seen as spam most places regardless of big tech influence. A bit of searching finds a couple posts about Neeva on big subreddits, which typically didn't get any traction[0]. Of course, the conspiratorial answer is that reddit lies about votes to suppress things it doesn't like, but I have seen no reason to believe that.

My Mastodon server has seen six posts mentioning it since September 2022. Most of them are tagging Leo Laporte, a well-known tech journalist presumably trying to get him to talk about it. He did[1], but apparently not enough to generate much buzz.

[0] https://www.reddit.com/r/technology/comments/10diym9/neevaai...

[1] https://www.twit.community/t/twig-707-heartlessness-as-a-ser...