There actually are SOME cases where what's after the question mark COULD be useful, if DU's software worked differently. It's not ALWAYS a 'bad thing', but our software here doesn't leverage it ... in those useful cases.
For example, if I try to share a Youtube vid, forwarded to the 193 second mark ... a "?t=193" is appended to the URL created by Youtube, which denotes to the Youtube server to 'start at 193 seconds', but the DU software will not support it, and will instead show the "?t=193" mark (which denotes a list of 'parameters' being passed the web server, in case you're interested 
) as text, but does not 'pass it' to YouTube when you (as a DU user) click the video.
Which is why, if you click the below video, it will start at the beginning, instead of at 193 seconds ... like I was hoping when I created the link. And IS what would happen if you copy/pasted the actual link I pasted below ... into your address bar. That "?t=193" there ... is extraneous, rather than 'useful', due to how DU works.
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