@swiff a casual user is a user who is able to stop using a software when it ceases to be pleasurable for them. because they can just log out, they are able to pick and choose the aspects of the software they find enjoyable and ignore the rest
in a social media context, casual users typically avoid drama/discourse, maintain small, enjoyable networks, and post largely about themselves or things of immediate consequence to them
a power user, in contrast, is a user who, for some reason real or imagined, feels their livelihood is dependent on the software and consequently cannot “just log out”. because their use of the software is unconditional, they are incentivized to attempt to warp the software in ways which serve their own benefit
in a social media context, power users typically have a vested stake in drama/discourse, try to build large networks, and post about meta or things that they think will have broad impact
tl;dr: power users attempt to control the software, whereas casual users attempt to control their usage