Why do you had parameters to shared URLS

AccountSharing
Help ID: 72
To help the owner of the website source where visitors are coming from, we follow standardized marketing techniques to assist them.

UTM_SOURCE is used identify the website (i.e. us at Sportsa)

UTM_MEDIUM is used to identify the where (i.e. a post, chat, promotion, etc)

We try to identify urls with the source in and replace it so that it accurately reflects the source of link.

For more information on campaign tracking see

https://support.google.com/analytics/answer/1033863