I ran across a great SEO article via Twitter, the link is here

http://www.seomoz.org/blog/what-every-seo-should-know-about-iis

There was a comment I wanted to add a few ideas, I tried to format the comment, however it didn’t format to cleanly so I thought I’d add here.    Review the comments in the article too, there are some additional items mentioned worth checking out.  I hope he picks up this post and adds the couple links for reference.

Couple other things to reference to this great article. Here are three commands I run on all servers. I use the compression level 9 on a very high volume with no impact, Here is another article on other properties and http://learn.iis.net/page.aspx/206/dynamic-compression/

Scott Forsyth wrote an article on compress level and performance which is a good read. http://weblogs.asp.net/owscott/archive/2009/02/22/iis-7-compression-good-bad-how-much.aspx

Enables

c:windowssystem32inetsrvappcmd set config /section:urlCompression /doDynamicCompression:true

Sets the compression level
c:windowssystem32inetsrvappcmd set config /section:system.webServer/httpCompression -[name=”‘gzip’”].dynamicCompressionLevel:9″Mkdir D:DataIISTemporaryCompressedFiles”

Sets the directory path
c:windowssystem32inetsrvappcmd set config /section:httpCompression /directory:D:DataIISTemporaryCompressedFiles /maxDiskSpaceUsage:100 /minFileSizeForComp:256″

Hope this helps

Steve Schofield

Microsoft MVP – IIS