I consulted a few years ago before Yahoo and CNET and my clients were all small businesses, even friends' sites.  No matter the size of the project, you can still try to get some insight into your target audiences and what they need or want.  I mentioned in a previous comment I used Search once to determine sentiment on a site vs. it's competitors by searching for a feature the site and its competitors all had, along with "like", "love", "hate", "wish", etc.  I also took note of who the people were who said those things and where they were talking (forums, twitter, etc).  It's a hacked manual approach and although not nearly as quality as a good market research report, at least I have a llittle bit of insight before going out to make site recommendations based solely on tags & links.  If you're recommending the site build things that people want (and fix or remove things that they dont), you're more likely to gain links and traffic naturally.

Spider-driven search engines such as Google®, Yahoo!® and MSN® use "robots" or "crawlers" to score websites across the Internet. Robots "spider/crawl" each site and "score" pages based on how relevant they are. A website's score or placement within a spider driven search engine is derived from hundreds of variables such as link popularity, density and frequency of keywords in page content, HTML code, site themes and more. You will want to focus many criteria in your SEO strategy to position yourself well among the major search engines. Here are two of the most influential factors:

A user-feedback poll is one great, easy way to help you better understand your customers. Kline claims, “Done incorrectly, these can be annoying for a user. Done well, it’s an excellent opportunity to help the customer feel that their opinion matters, while also getting needed insights to better market the company. One poll we ran for an e-commerce client helped us learn that 80% of potential customers cared more about the performance of the product than the price. [So,] we added as much helpful performance information to the website as we could.”

Thanks so much for this entry, Laura! I loved the way your post is so practical, straightforward, newbie-friendly - and most importantly, how it emphasizes the bottom line at all times. It's easy to get "lost in the fog" of SEO with so many looming tasks and forget the main purpose, so it's wonderful to have a straightforward outline of what to do and why certain tasks need to be done. I look forward to reading your future insights!
For some reason I had to delete some pages, these pages are using the HTML suffix, so I blocked them in robots.txt use Disallow: /*.html, but it’s been almost a year, I found that google robot often capture these pages, How can I quickly let Google completely remove these pages? And I have removed these URL from google webmaster tool by google index-> remove URLs, but Google still capture these pages. 

Page and Brin founded Google in 1998.[23] Google attracted a loyal following among the growing number of Internet users, who liked its simple design.[24] Off-page factors (such as PageRank and hyperlink analysis) were considered as well as on-page factors (such as keyword frequency, meta tags, headings, links and site structure) to enable Google to avoid the kind of manipulation seen in search engines that only considered on-page factors for their rankings. Although PageRank was more difficult to game, webmasters had already developed link building tools and schemes to influence the Inktomi search engine, and these methods proved similarly applicable to gaming PageRank. Many sites focused on exchanging, buying, and selling links, often on a massive scale. Some of these schemes, or link farms, involved the creation of thousands of sites for the sole purpose of link spamming.[25]
What is Search Engine Optimization (also known as SEO)? A broad definition is that search engine optimization is the art and science of making web pages attractive to search engines. More narrowly, SEO seeks to tweak particular factors known to affect search engine standing to make certain pages more attractive to search engines than other web pages that are vying for the same keywords or keyword phrases.
Nice work Laura! This is going to be a great series. I'm working my way through SEOmoz's Advanced SEO Training Series (videos) Vol. 1 & 2 to build upon the advice and guidance that you and your team provided to me during my time at Yahoo!. Now many others will benefit from your knowledge, experience and passion for SEO strategy and tactics. Best wishes for great success in your new role.