For your first point, I know network solutions was caught [1] doing that. Never heard of GoDaddy doing it. Your other points, I'm willing to ignore for the benefit of /really/ cheap domains. They're not the car salesmen of registrars, but more like the grocery store, putting the candy bars in the checkout isle.

Disclaimer: I have 4 personal sites registered with godaddy. I was using a couple others, but I transferred them all to godaddy for simplicity's sake.

[1]http://www.dotsauce.com/2008/01/08/networksolutions-scandal-...