Info: F-Secure Safe Search (Google HTTPS)
In case someone has missed it:
https://search.f-secure.com/ A Google powered search over HTTPS that shows safety ratings for all links.
I believe it's not a beta anymore as the https://safesearch-stg.f-secure.com/ still shows beta, but the above link does not. Haven't found any official confirmation on that though, but the KB article switched these addresses last week:
Currently, when googling for F-Secure Safe Search only the beta will show up.