I hat "unknown/expired link" - It wastes my time and frustrates me when I just leave the page up for a time then click more and get that error. I also can't stand the URLs not being human readable.
I can dig it, but you know that CL is extremely fast, right? Even in the oft-lamented interface, it's easy to go to the right place. Everybody can figure out Craigslist.
Get over your analysis - this service is farking amazing and Craig is an idiot for trying to thwart it.
Craig has consistently chosen to sit on his hands and do nothing because he is to afraid to mess with the CL money pot.
Things evolve. CL has not evolved hardly at all and after 10 years + it is hurting people for its lack of change.