I generally agree with you that Google is getting better at detecting tricks, but Google is far from perfect and there are a lot of tricks that still work. I'm looking for specific results/data specifically on the CTR manipulation services...

Have you done any tests with CTR manipulation services work?

This is not a tactic white hat SEOs would use, but it's still good for us to know whether it works, so we can respond correctly if our competitors use it, to figure out white hat ways to combat it, to answer client questions, to have a better understanding of Google's algorithms, etc.

Eric,

If you are optimizing category pages, I recommend modifying your theme to display your category description as visible text on the page. This will allow you to have some optimized text on each category page. I believe there is a title tags plugin that will allow you to change the title tags of your category pages individually, also.

Yeh, I think this is a good topic to be aware of, even if we wouldn't use it. That way we can respond correctly if our competitors use it, figure out white-hat ways to combat it, have a better understanding of Google's algorithms, etc. All else failing, it wouldn't be expensive to test them out.

When adding or editing categories in WordPress, there is a field called "description" (not meta description) with the label "The description is not prominent by default; however, some themes may show it." Your developer can modify your theme so the description text is displayed on the category page.

Google is getting much better at recognizing location, but I would still work to include it on the page in a few places. That's what I've seen the best results doing. My recommendation:

• Include the location in the title tag.
• Include the location in the H1 or at the top of the page - this is for the user as much as for search engines, to reaffirm to the user that they are on the website of a local company.
• You don't have to use the exact keyword + location phrase - mix it up and be natural. For example, "We're a roofing company serving Portland and the surrounding area of Maine."
• Include the location (eg city name) and state at least 2x on the page.
• Use schema.org markup on your physical address in the footer, sidebar, or elsewhere on the page.
• Don't include the location in anchor texts in your navigation - that looks rather spammy.

If it is coded correctly then search engines can and will read the links in the dropdown menu.

The SEOmoz Keyword Difficulty tool is great, but the 5 keyword limit is too small. I need a tool that will allow checking the organic competition level of 100's of keywords (to help in selecting blog topics). Anyone know of such a tool?

This isn't necessarily surprising. Penalties and negative ranking algorithms can be applied at a page level, a subdomain level, a root domain level, etc.

For example, HubPages used subdomains to help escape from a Panda slap.

Another example: Google placed a manual penalty on a single page of BBC's website.