[ColinWright]

Personally, I remove them "by hand" whenever I submit a link to any site, or otherwise share them anywhere.

I know I'm not the only one.

[defgsus]

That is certainly good practice as you otherwise might disturb the statistics ;-)

Imagine sharing a link unaltered from some android app and now company X thinks the android users are actually growing.

If i think about it, actually, we should add randomly swizzled utm params to all posted links ;)