Rated 5 out of 5 stars
I love Spiderzilla add-on more than Firefox itself, I am ditching FF3 until it will work with Spiderzilla.
The most usefull feature to me is the CSV log file generated during the crawl. I can easily open it in Excel, analyse the flaws on the site and tie any loose ends. I use it daily for setting permanant redirects when moving sites.
Spiderzill will crawl the new and the old site. Than I pair the old ULRs to the new URLs in Excel, which will give me all the permanant redirects I need when moving sites.
Great tool of immense help to all SEOs