Where do you register your domain? I'm interested to see which is most popular, and more importantly, what you think of them, customer service, setup speed, control panels, and suchlike.
Godaddy - use the coupon OYH3 to get your .com for $7.15. Namecheap - good for private registrations Dynadot - you can pay via Moneybookers So I'm fine with these 3.
I don't like 1and1, there is no option to setup nameservers and the support is so slow :| I use Fasthosts (UKreg) xD
Total Registrations (UK) - Great company to do business with very helpful and very reliable. We've used most of the major registrars but in the end we chose to move to Total Registrations as our primary registrar. (We've been using them since 2001)
My first choice is Mydomain, I just like their interface, bulk tools, features & prices (with coupons)