I'd argue that the majority of people that are using URL shorteners have a more fundamental problem: They don't even realize that most of the params aren't needed.
For example, I recently looked at this King Hokum CD on Amazon (awesome artist BTW, this CD is stupid overpriced though): http://www.amazon.com/gp/product/B0012U346Y/ref=s9_sims_gw_s...
What's the relevant part?
http://www.amazon.com/gp/product/B0012U346Y
But how the hell does someone know that without dicking around?!