The following quote is from Matt Cutts' G+ page:
I bolded what I thought were the interesting parts. That really sucks for webmasters who got the message. It's like Google is saying, "HEY! We noticed something unnatural in your link profile, but don't worry - you don't need to do anything about it. But hey, if you suddenly lose rankings then yeah, you should start doing something."If you received a message yesterday about unnatural links to your site, don’t panic. In the past, these messages were sent when we took action on a site as a whole. Yesterday, we took another step towards more transparency and began sending messages when we distrust some individual links to a site. While it’s possible for this to indicate potential spammy activity by the site, it can also have innocent reasons. For example, we may take this kind of targeted action to distrust hacked links pointing to an innocent site. The innocent site will get the message as we move towards more transparency, but it’s not necessarily something that you automatically need to worry about.
If we've taken more severe action on your site, you’ll likely notice a drop in search traffic, which you can see in the “Search queries” feature Webmaster Tools for example. As always, if you believe you have been affected by a manual spam action and your site no longer violates the Webmaster Guidelines, go ahead and file a reconsideration request. It’ll take some time for us to process the request, but you will receive a followup message confirming when we’ve processed it.
Comments on this post
- DarrenHaye → agrees: Just checked and phew, didn't get a warning.