I deleted all of my parked domain names from Sedo.com and moved them to Parked.com to compare the performance of the progams. In the transition, I had to update nameservers for a total of 98 domain names.

I started changing the nameservers one by one without much thought, but I noticed that I had just wasted an hour updating nameservers! I should have used the bulk nameserver edit feature provided by GoDaddy. Damnit!
Domain Nameservers