The new toolbar by SEO Book is a brilliant release combining most the necessary features any SEO consultant needs when doing research on a website or a competitor.
I-COM has an online reputation management tool in development and we could use your feedback on important features and sources of RSS feeds.
Browse a list of 25 sites and tools that can help you do marketing research online for free to get an idea of user demographics popular searches and hot topics and products.
Google Insights for Search is a great tool for market research to find out when and where people look for your keywords to run seasonal or regional marketing campaigns.
Google have published an article on the Webmaster Central Blog explaining how Googlebot crawls sites depending on which search index or Google feature requires fresh information from your website.
It is important to ensure that search engines understand the canonical URL for your website so they do not think you are showing duplicate pages on different URLs.
Google Friends Connect is a great way to add social networking features to your website and encourage user-generated content. You can sign up for a preview while it's still in Beta.