Normal site owners should always be afraid, there are far too many automated scanners not to be looking at your logs.
As for the nintendo hack it was stated as a warmup and what was posted was the apache conf, it was not lulzsec main target (at least it wasn't stated as one) nor was it necessary for all these news articles to come out about it. In fact I wouldn't be surprised if all these news articles prodded the right nerve for someone to hack nintendo to expose user data just because so many news stories came out that nintendo user data wasn't compromised.
