You can stay up to date with what goes on at opinios a couple of ways.
One is to subscribe to the opinios mailing list. Mail-outs are not very frequent - I am not interested in sending you spam, and don't have the time to send you other non-related stuff. And I definitely won't give your email address to a third party. But any time there is a major update or a notable submission is posted I like to let the community of opinios readers and contributors know about it.
The other way is to read opinios via the RSS feed. If you have an RSS news aggregator like NetNewsWire (Mac) or Syndirella (Windows) then point it here*.
*I am still working on fixing the broken links present when viewing opinios as an RSS feed.