i don't think i do this - not in the sense of having an urge to share every other random image i come across.
when i was somewhere between 19 and 25, i did do something similar. i would send text messages to my friends on impulse which said something like "the other day i had these ideas for drawings: [insert several extensive descriptions that occupy some eight or ten separate messages] and i just thought i should share them. what do you think of this?" or "i want to start working on a drawing that will have [description of the pattern follows] and use [this] or [this] or [this] as color combinations. will you choose the one you prefer for me?" i guess it was my idea of a mini-brainstorm. my friends must have been very frustrated with me.
around that time i also went over the top with emphatic punctuation and assorted bits of insertable fluff such as emoticons, glitter graphics and the like - or forced myself to, because none of this is really
me. i had an image of what i thought i ought to be like - a person who radiates warmth and shows it in such a overt, boisterous way that it may seem silly or strange at times - and i tried to live up to it, even though it sapped most or all of my energy (and i have no idea how awkward it made me appear to others). all a huge overcompensation, i think. later i came to realize that i could not be this, was never going to be this and
should not be this. why attempt to turn myself into someone other than who i am? so i dropped that forced preoccupation with shiny things and started to show warmth - or my appreciation for the outside world - in ways that feel more natural.
i do occasionally send my friends random emails with odd or adorable cat photos i've collected over the course of several weeks, or other images i like. usually those are photos of wildlife - bright and unusual flowers, mushrooms, deep-ocean creatures, insects etc. - but it can be something else too, such as artwork (recently it was yacek yerka, for example, or a modern impressionist painter whose name i keep forgetting). but then this is probably not what the author of the OP had in mind.
I see a trend between FPs and a love of bright, rainbow colors... it's like they have a magnetic force...
/tractor-beam
count me in. i suppose that for me, it stays inside more than it shows on the outside, but it's there.