Rand Fishkin's blogs his research on SEO tools, Internet search and search engine news. Rand is a well known poster on the top SEO forums, writes articles, and has produced a number of high end SEO tools.
Seomoz.org is a search engine optimization company whose website offers useful tools for webmasters. Their Page strength tool is quite good (eventhough not quite accurate) to get an idea about a website or a domain. They also have many other useful tools which webmasters will find handy.
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"We had gay burglars the other night. They broke in and rearranged the bedroom furniture". (Robin Williams)
