Nasty stuff. Worst offenders are Facebook and Google.
|Parameters||example||Docs & background information|
|utm_source, utm_medium, utm_campaign, utm_term, utm_content||edit 61350123||https://support.google.com/analytics/answer/1033863#parameters|
fbclid is known to break things:
There are more such parameters. I haven't seen them yet on MB:
Neat URL is a browser extension which strips parameters client side and could serve as a potential source of more parameters to remove.