One of the best things about reddit was looking for answers or other users with the same problem as you, and since Google didn’t really help with that anymore and instead insisted on giving you business results, the best practice was to put your search terms in followed by ‘reddit’ and you’d find your answer.
I’ve been experimenting with my instance and google does index my lemmy.mitchday.com page. If you search ‘lemmy mitch day’, you get my page right up top and a few motorhead fans named mitch down below.
My experiment involves trying to SEO a vanity domain I’ve had for years and only used for email. Since July 4, the page ranking for my general site has steadily climbed. The little bit of traffic from other instances and a handful of subscriptions seems to be impacting the ranking.