Sure, you have a set of search engine optimization tools to aid you in doing SEO services. But would you add a few to your list?

Here's Stephan Spencer's treasured don't-leave-home-without SEO tools:

Disable Tab
Disable JavaScript.
Select Disable JavaScript and ReLoad the page and browse the site. Does that fancy dropdown navigation still function? Can you click on all the links? If it doesn't and you can't, then guess what... the search engine spiders probably can't get there either.

Images Tab
Is all that great copy on the page really text that the search engine spiders can eat up and use for indexing the pages, or is it really just a bunch of images? Select Disable All Images and you'll quickly find out.

Displaying alt attribute text
Use the Display Alt Attributes feature to view the alt attribute text of all images on a page. You should do this to make sure that none of the images have been stuffed with keywords, which won't help in ranking and doing so may actually hurt rankings.

While text is best for navigation and links, if images are used for this, it's especially important to make sure the alt attributes contain the textual equivalent to capture any value the search engines may give to images used for links.

Information Tab
Select View Link Information to view all the links on a page. Are there more links on a page than you thought? If this is your site, are there any links leading out to sites that you weren't aware of?

Use View Meta Tag Information to quickly see all the meta information for a page to make sure that each page has a unique, keyword-rich and relevant description.

Use the View Response Headers and check the 404 Error page of a site by going to a page that doesn't exist, like yourdomain.com/errortest and make sure that it returns a 404 Error and not a 200 "OK" response.