So there's a lot going on with Google and their Supplemental Index recently. I honestly haven't been paying close attention to any super new news, but I do know a couple ways which people have tried to figure out if their site is in Google's Supplemental index. Here are some various methods and how my site stacks up.
Method (Number of pages | description of results):
1.) site:www.dennisplucinik.com ***-slktf (4 pages | Probably the Supplemental)
2.) site:www.dennisplucinik.com *** -view (135 pages | bogus/nothing - see below(*))
3.) site:www.dennisplucinik.com/& (142 pages | nothing special)
4.) site:www.dennisplucinik.com (142 pages | all indexed pages)
5.) site:www.dennisplucinik.com -inallurl:www.dennisplucinik.com (128 pages | all indexed pages NOT in the Supplemental)
Also I came across this site today which basically determines the percentage of pages on your site which are indexed Supplementally:
Google's Supplemental Index Ratio Calculator
The way it works is this:
1) Replace my domain with yours and search for this in Google:
- This will display all the results from your website which are NOT in the Supplemental index.
2) Replace my domain with yours and search for this in Google:
- This will display all the results from your website which INCLUDING the ones in the Supplemental.
To figure out your percentage of pages in the Supplemental do this math:
(1-("Pages NOT in Supplemental"/"All pages"))*100
For instance, I have 142 pages total, and 128 NOT in the Supplemental, so I would do:
I also did a check of these methods on a site for a large eCommerce company which I know has tens of thousands of pages indexed in Google and here are the results:
1.) site:www.dacardworld.com ***-slktf (2 pages)
2.) site:www.dacardworld.com *** -view (1,580 pages)
3.) site:www.dacardworld.com/& (40,100 pages)
4.) site:www.dacardworld.com (40,700 pages)
5.) site:www.dacardworld.com -inallurl:www.dacardworld.com (1,260 pages)
In closing, I think that method 2 and 5 are returning some kind of listing of results with something missing. It is implied that the missing results make up the Supplemental index although method 5 can be 5-20% less than method 2 so... ? Also method 1 is returning pages from some very specific somewhere. I wonder where.
Basically you're going to need to draw your own conclusions. If anyone has any other input on this topic, I'd be thrilled to hear some current discussion on it. Anyways, I hope this helps clear things up a little bit for now.
(On a supplemental closing note, there are many companies making a killing online with a significant percentage of their pages in the Supplemental index. Granted - they spend a significant amount of money on pay per click advertising with Google. So I guess I'm saying, it is still possible to run a profitable online business with poor organic rankings as long as you pay Google money to advertise on AdSense.)