Re: iab.com and iabuk.com
Yes, the trackers are the first thing I always strip from the URL before sharing with anyone.
You should see the trackers in the URL that you get from mailing lists like newspaper ones, they appear long enough to hold you DNA sequence*. As far as I can tell, few other people bother when they send me links, so I always have a quick look first - and don't get me started on link shorteners such as bit.ly - why can't the all have the same code for "show me what link this actually represents"?
* yes, that's hyperbole. Roll with it.