A new type of supplemental - directory missing an index page

[fraudcop]

doing a site: search this morning I found listed as supplenmental 291 never seen before urls of directories missing the index page

like this:

[site.com...]

since i named the directory main page not "index.html"

but "main.htm"

not to dilute the PR of the other urls inside the directory, should I redirect directory/ to the existing main page?

[site.com...]

or leave them as supplemental.

thanks in advance

[g1smd]

Never include the index file filename in any link to an index page. End the URL with a trailing "/" after the domain name or after any folder name.

Install a redirect that redirects any call for (*/(index.(htm(l)?¦php))¦(main.htm)) to just (*/) using a 301 status code, to prevent duplicate content issues.

Google usually prefers to list the shortest URLs like www.domain.com/ and www.domain.com/folder/ without any appended index file filename. It is likely that if you don't install a redirect, which one they list ("/folder/" or "/folder/main.htm") for your site might "flip" from time to time.

Having both www.domain.com/folder/ and www.domain.com/folder/index.html available as status "200 OK" is duplicate content. If you link to www.domain.com/folder/index.html then you are passing PageRank to the URL that Google isn't listing - and wasting it! Link to the URL that does NOT include the index file filename!

Additionally, make sure than any call for /folder is redirected to /folder/ each time, as well as the usual site-wide 301 redirect from non-www to www for all pages.