Hehe I guess this is subjective, but I tend to write mostly in American English, and I tend to use the "modernized" forms of words like monologue, hence monolog. As far as I know most dictionaries recognize it as a valid version of the word, anyway.
Sounds better and shorter than: give me a summary of how your traversed your decision tree to come out with this answer, which to be honest is pretty close to what a monologue actually is
google image search will mostly only show stuff that has been around relatively recently - since google image search started. i was using something like instant messenger before there was a google.
