The shipping method I've been using lately is great. I'm aware this might not be the right place for this thread, but I figured the greatest number of people would see it here.
Anyways, there's a loophole with PayPal where when you're signed in you go to
www.paypal.com/shipnow and you can ship something without receiving any payment via PayPal. You can choose the funding source, postal carrier, everything. I always choose USPS First Class Parcel Post (2-4 days in US). Up to 6 ounces, its $1.64. 13 ounces and above is $2.15, I think. The best thing about shipping this way is you get Delivery Confirmation, which you can also use for tracking.
Hope someone found that useful!