When on an SE site I use the button to the left of a question to share a link to the question on Twitter, am using a Twitter message that contains a code that identifies who shared the link?
I used the link added to the Twitter messages generated by that link, but it seems that the link goes directly to the question page.
Is there any difference between the link produced by the "share link" button, and the link obtained from the "link" button on the bottom of the question?
As far as I can see, that link contains my user ID on the site.
Update: I am not concerned about the privacy. If I would want to share the link to a question without it contains any data that identify me, then I would use the link I see in the address bar of the browser.
I am asking the question to understand if SE knows I am sharing links to SE questions when I am using the "share on Twitter" button.