In Open site explorer the page title and Url show in the left hand column. Why do some of my pages have no data for page title?

[IV-Debbie]

I am a first time user.  Newly updated site using Drupal and having lots of SEO problems.  Under site explorer, several pages list NO DATA for the page title.  This doesn't seem right.  Any suggestions on what this means?

[DavidLee]

Hi Debbie!

Generally NO DATA means we either have not crawled the pages or there is a re-direct in place (301, 302)

Just so you know, here's how we compile our index:

• We grab the most recent index.
• We take the top 10 billion URLs with the highest MozRank (with a fixed limit on some of the larger domains).
• We start crawling from the top down until we've crawled 90,000,000,000 pages (which is about 35% the amount in Google's index).

Therefore, if the site is not linked to by one of these seed URLs (or one of the URLs linked to by them in the next update) then it won't show up in our index.

Mozscape focuses on a breadth-first approach. Therefore we almost always have content from the homepage of websites, externally linked-to pages, and pages higher up in a site's information hierarchy. However, deep pages that are buried beneath many layers of navigation are sometimes missed and it may be several index updates before we catch all of these.

Hope this helps!