I'm currently working on a website with a huge amount of content, exploring how breadcrumbs can be used more effectively. The website uses very traditional breadcrumbs currently:
One > Two > Three > Current page.
However, I've come across this method used on Twitter's dev documentation: https://dev.twitter.com/overview/documentation. Interestingly they've turned each level of breadcrumb into its own dropdown navigation.
I'm wondering if there is any research/best practice/general thoughts around this approach (or something similar) that I can refer further to? I'm interested in this approach, but I'm not completely convinced of its usability. Particularly for users who aren't strong with technology.