Optimising Web Design for SEO

Here is what Google has to say about the file extensions: "At Google, we are able to index most types of pages and files with very few exceptions. File types we are able to index include: pdf, asp, jsp, html, shtml, xml, cfm, doc, xls, ppt, rtf, wks, lwp, wri, swf.“

Details on file types:

• Adobe Portable Document Format (.pdf)
• Adobe PostScript (.ps)
• Atom and RSS feeds (.atom, .rss)
• Autodesk Design Web Format (.dwf)
• Google Earth (.kml, .kmz)
• Lotus 1-2-3 (.wk1, .wk2, .wk3, .wk4, .wk5, .wki, .wks, .wku)
• Lotus WordPro (.lwp)
• MacWrite (.mw)
• Microsoft Excel (.xls)
• Microsoft PowerPoint (.ppt)
• Microsoft Word (.doc)
• Microsoft Works (.wks, .wps, .wdb)
• Microsoft Write (.wri)
• Open Document Format (.odt)
• Rich Text Format (.rtf)
• Shockwave Flash (.swf)
• Text (.ans, .txt)
• Wireless Markup Language (.wml, .wap)