You’re welcome. While we wait for our subject matter experts to join the conversation, here are my thoughts.
As a user, I would only want to get looped back directly to the site if there were something genuinely interesting or new there that I may not have noticed otherwise.
As a user, I wouldn’t object to getting a relevant cartoon or a meme thanking me - but that depends on the tone of your site. I think that I’d be put off by a cartoon from a financial site.