I ran across a great SEO article via Twitter, the link is here
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 is some additional items that are worth mentioned. 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
c:\windows\system32\inetsrv\appcmd set config /section:urlCompression /doDynamicCompression:true
Sets the compression level
c:\windows\system32\inetsrv\appcmd set config /section:system.webServer/httpCompression -[name="'gzip'"].dynamicCompressionLevel:9"Mkdir D:\Data\IISTemporaryCompressedFiles"
Sets the directory path
c:\windows\system32\inetsrv\appcmd set config /section:httpCompression /directory:D:\Data\IISTemporaryCompressedFiles /maxDiskSpaceUsage:100 /minFileSizeForComp:256"
Hope this helps
Microsoft MVP – IIS