After a presentation about shortly after the book was published, an audience member came up to me and said that we didn't include a mention about a specific portion of the Invisible Web.
I thought to myself and wondered what we forgot to mention.
She explained that for many searchers EVEN IF the material has been found and crawled by a general web spider but it's not found in the first few results, its invisible.
I think the comment was right on the money. Placing content in a database is one thing, the ability to FIND it is something else. The fact that:
+ the average query length is about 2.8,
+ most searchers don't use any advanced syntax
+ search skills haven't improved that much in the past few years
+ there is little to no use of controlled vocabulary (to help bring like things together)
+ many searchers only look at the first few results on a serp
and other issues further complicates the situation.
This is another reason why specialized/focused search tools (verticals) can be very useful.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.