Just an observation--a bit of a nit that I'm compelled to pick--but I'm of the mind that a full image with text placed directly on top of it is more likely to be a picture itself, and "screenshot" refers to an image whose contents have been captured from some other source (like an SMS exchange or a social media post).
Content notwithstanding, I've been seeing lots of images here that aren't obviously screenshots, be they meme form or even sequential comics.
Anyway...carry on.
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