SEO (Search Engine Optimization) helps the search engines (Google, Yahoo) to find and catalogue your web site. SEO is important if you want to be listed on high positions in search engines. For example, if you want people to find your web site when they search for 'sequence assembly', click the 'SEO' tab and fill the SEO fields like this:
     Page title: 'DNA sequence assembly page'
     Meta description: 'DNA sequence assembly software and methods. Download my free sequence assembler software'
     Keywords: 'DNA sequence software contig free assembly assembler data samples abi SCF fasta sff'