Any sort of "connoiseurship," which might be described as an extreme
knowledgeability and affection for a certain subject or practice, is a
potential "rabbit hole" down which one could descend quite far if one allows it. 

And the internet often makes that hole deeper and, shall we say,
smoother, all the time.   Easier to fall in, easier to fall down it, both further and faster.  It might be also possible that just as there are addictive personalities, there might also be personalities that tend to do this (is this the same as obsessive-compulsive?) - not about just a single interest, but that are more susceptible to getting geeky about any specialized area.  Because "geekiness" is another word for this, isn't it - either geekiness or its dark twin, hipsterism.  Hipsters differ from geeks in that they want to use Read more>>>