It's a bittersweet situation as we rejoice pg adding a search bar to Hacker News  while mourning the sudden loss of SearchYC .
One service SearchYC provided that remains a need unfulfilled even with the new feature is search for Arc Forum, pg’s other news.arc forum . This had been an extremely valuable resource to the Arc language community as SearchYC had been to the Hacker News community. It kept the old gem posts and comments which tend to get buried in the forum accessible to new readers.
How can we address the problem of lost search to Arc Forum and the other Hacker News sister forums in the wake of SearchYC’s shutdown?
I think UseTheSource (yet another news.arc forum) had built-in search, but they're no longer operating either. From http://usethesource.com/ : "UseTheSource has been shutdown. It wasn't getting enough traffic to justify fighting the spammers." :(
Edit: Added notifo point.