Canonical redirection Definition: Canonical [k uh - non -i-k uh l] - a standard way of presenting that object http://www.example.com = http://example.com Search engines view this as two different URLs. Improper canonicalization results in possible search engine confusion and inadvertently duplicating your entire site. Related forms of canonical issues can come from improper handling of secure pages (https vs. http) and subdomains ( sub.example.com vs. www.example.com )
Canonical tags Insert this tag in the head of pages to indicate what you believe the URL for the page should appear as. This will help prevent mis-indexing. <link rel="canonical" href="http://www.example.com/product.php?item=widget"/>
XML sitemaps Should be a basic, but people still are not using them. Don’t have one? Get one. Add the proper command line to your robots.txt ( sitemap: http://www.example.com/sitemap.xml ) and submit to Google and Yahoo.
Spider management Robots.txt – Does not keep a search engine from indexing a site, it only keeps a search engine from indexing the content. URLs can and do rank based on folder & file names as well as incoming anchor links and anchor text. Robots META – Prevents both URL and content from being indexed. Using regular expressions with robots.txt – Block content indexing of precise areas of your site to help with reducing duplicate content.
PageRank sculpting Internal links are votes. Which pages are you voting for? The more internal links a page has, the more important you are indicating a page is. So, really, how important is your privacy page in your SEO strategy? Linking to non search engine important pages drains small amounts of PageRank power from important pages. Nofollow non search engine important links.
Comment spamming Unless you have something to add to a conversation on Web 2.0 media, don’t leave comments just to get your URL on a page. Not only does it make you look bad because it is rude, many times it is ineffective for link building as nofollow is added to comment links.
Actually involve yourself in the conversation – not only will this give you legitimate reasons to insert your brand and links, but it will also help you develop a positive relationship with your customers and potential customers.