When creating a RAF account use your normal e-mail log in. This will give you another account that will be separate your main account. I was testing out a few things and found out that along with sharing your mounts and achievements you can send your BOA gear to the new RAF characters that are on the same server. This will help you level and be able to grand levels faster to your main account. I recommend that if you are planning any heavy bottling DON'T use anything that could link back to you. However its a good option if just wanting a second account to work with.