Google uses an indented result as when it finds multiple results from the same website, the most relevant result is listed first, with other relevant pages from that site indented below it. At least most of the time.
On occasion, I do a few vanity searches on keywords I want to rank for. I was searching “Social Media Consulting” on Google today, and noticed something odd with my result. Google gave me an indented result… from a different site.
I blogged recently about the new search box feature Google introduced and maybe in the process they broke something. Of course this could be just a random error, but refreshed numerous times and got the same result.
If I find out why it is occurring or any further updates I will edit this post.