Selected answers from the Dumb SEO Questions Facebook & G+ community.
Michael Martinez: "Crawl depth" is a misunderstood theoretical concept.
Every page on a well-connected site has MULTIPLE crawl depths.
You must look at crawl depth jointly with "crawl entry points", and every page on a site that is in a search engine`s index is an entry point.
The SEO tools that start crawling a site from page 1 don`t replicate the crawl patterns of search engines.
You don`t need to worry about how deep a page is from the root or home page. You only need to worry about how deep a page is from all possible crawl entry points that lead to it.
And a crawl depth of 4 is pretty shallow.
Michael Stricker: ^ ^ ^ And every integrated page is part of the “crawlpath†to another page. Be practical and logically build helpful progressions to useful sequences of pages. Don’t obsess over petty details.
Perry Bernard: Another version of what Michael Martinez said: avoid having a situation where the only way to reach a page is to follow a unique navigation path. It means users will struggle to discover them. That’s the main concern in my view.
Is it of any added advantage to have crawl depth to the important pages of 1 or 2 instead of 4? Since crawl depth of 4 is still acceptable? 
