Trackback spam blocker for .TEXT

I just hope this works since i have been hit majorly by referer spam in the last few hours. Brian Delahunty has a trackback spam blocker for dotTEXT, which i have just implimeneted. There is some extra regexs to get rid of other spam. i will try an add a few more when i find out which ones are being used on my blog too… Thanks for that Brian!