Helping search engines and robots.txt
Drupal by itself is very search engine friendly. For example it is not uncommon for Drupal based sites to have have a Google ranking of 5 or higher (out of 10) where using the same content on another CMS would score much lower.
Still, you can make Drupal even more search engine friendly by changing some default parameters. There are several Drupal settings you can tweak to make Drupal even more search engine friendly.
- First of all you might want to enable friendly URL's
- Then, make sure that you get rid of the session ID in the URL by changing the .htaccess if you are using version 4.5.x. On 4.6, session IDs in URLs are disabled by default.
- Optionally, use URL aliasing for some or all nodes. You can use the pathauto module to automatically create aliases for new nodes.

"Google ranking"
I'm sure with "Google ranking" (see paragraph 1) you actually mean the Google Page Rank (tm). Page Rank is from 0 to 10. There is no other value that would make sense to be referred by "Google ranking" in that way. Actually PR is a value out of 11 (it's from 0 to 10), but that's not the only mistake located on this tiny book-page.
It is wrong to assume the "Page Rank would have been much lower with the same content on another CMS". Page Rank doesn't depend on content or on a specific CMS at all. PR solely depends on how much the URL is linked from other URLs. Trust me, there is absolutely no other factor than the so called link structure. Even the URL format doesn't matter. You could build an URL with lots of parameters and receive a good PR if you point some fat links to it.
There is also an interesting false conclusion. A "PR of 5 or higher" is a quite common value for popular sites, and popular sites often use a solid back-end like Drupal. From this relation the authors conclude Drupal sites often get a PR of 5 or higher, and Drupal thus proves to be very search engine friendly. To me that seems like seeing birds singing when the sun rises, concluding the birds song makes the sun rise.
I'm sorry to say so (as I'm an absolute fan of Drupal), but it's absolutely for sure: an arbitrary CMS with arbitrary content would get the same PR if it is linked in exactly the same way.
However, not all information of this page is wrong or bad. Follow the three points at the bottom to make sure search engines can easily crawl the whole site and extract keywords from the URLs.
3y
this page is 3 years old, it needs love and i'll add your comment some time next week
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groets
bert boerland
I'm glad to see it's still
I'm glad to see it's still maintained. You're great!