Has noindex and nofollow directives
This means that the URL in question has both noindex and nofollow directives.
Why is this important?
If a URL is noindex,nofollow, this means that search engines are being instructed not to include the URL in their index, and to not schedule and crawl any of the links found in the HTML (similarly, crawler software like Sitebulb will not follow these links, unless 'respect robots' is unchecked in the crawl settings).
Using these type of robots directives is a common way to control what content search engines can crawl and index (e.g. a user login area). As such, there is potentially nothing wrong with these URLs, Sitebulb is simply notifying you that they are there.
What does the Hint check?
This Hint will trigger for any internal URL which has noindex,nofollow attributes, either in the HTML or in the HTTP header.
Examples that trigger this Hint
The Hint would trigger for any URL that had the following:
Meta noindex,nofollow in the <head>,
OR noindex,nofollow in the HTTP header:
Why is this Hint marked 'Advisory'?
In Sitebulb, this Hint is Advisory, as it does not represent a clear issue. Setting URLs as noindex,nofollow is very common, and there is often nothing wrong in this situation.
However it is worth double checking that there are no URLs using these directives that you actually want to be properly crawled an indexed. If there are, then the solution for this issue would begin with removing the offending directives.