I got referer spammed...

Poor me... I knew referer spamming is not something new. Now I got spammed by:

• www dot keywordmaster dot de
• www dot topspiele24 dot de
• www dot atomicvoid dot net
• www dot eurowins dot de
• www dot single66 dot com
• www dot superface dot net
• www dot heil-fasten dot com
• www dot superface dot de

But "fortunately" I don't list out any referers in my Wiki and Blog (except RecentChanges in Wiki, which has IPs of authors listed). Then how did I know I was spammed? Again, from AWStats, which is labelled as "NOINDEX,NOFOLLOW". n___n