There are a variety of tools folks can use to review their websites and find improvements that they should make. A half year ago there was a thread where folks identified a number of tools they use to find areas to improve on their website. Here is the link: Looking for good SEO analysis websites.
Periodically I use tools like those suggested in that thread to identify areas where work should be done on our sites (my personal favorites are screaming frog, Google webmaster tools, and SEOmoz, in that order). Over the last couple weeks I've put a lot of personal focus using those tools to identify issues to fix with our sites. So, while doing that, I wondered how often other webmasters use tools to examine and find issues to address on their websites.
Besides answering the poll question, share your favorite tools, and what you look for when you use such tools.
Michael