If it is not one thing, it is another. First you get your FFL and then you have to worry about someone else using it fraudulently. From the buyers end you can have an FFL holder question your motives when transferring firearms due to many scammers out there or worse get ripped off by someone using an altered FFL. The ATF has provided a full advisory for online firearms sells being conducted with fraudulent Federal Firearms Licenses. Apparently its not good enough to try and make an honest living by going through the proper channels, of course we all know that criminals are not going to abide by any rules, but honest buyers can easily get scammed if they don't dot their i's and cross their t's. You can find their full advisement below.
The Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) is providing the following information to make you aware of fraudulent online firearms sales. Some individuals are using fraudulently altered Federal firearms licenses to sell but never deliver firearms online.
A typical online scam starts with an online firearm advertisement. Purchasers who respond to the advertisement by telephone or email receive an invalid, counterfeit copy of a license that appears to be valid. After sending payment, the purchaser never receives the advertised firearm(s) and the fraudulent seller removes the original online advertisement and contact information.
To help you avoid this scam, licensees are reminded that only transactions between licensees require the furnishing of a certified copy of the license. Licensees should consider only providing the basic license number to individuals (e.g. 1-75-12345). The individuals can use FFL eZ Check to confirm the validity of the license number before sending payment for firearms advertised online. FFL eZ check is on the ATF Website at: http://www.atf.gov/content/firearms/firearms-industry/applications-FFL-eZ-check. If you have general questions regarding the FFL eZ Check system, you may contact the Federal Firearms Licensing Center at 1-877-560-2435.
You may also wish to contact the Federal, State, and local resources regarding internet fraud, to include the Federal Bureau of Investigation (IC3.gov), the Federal Trade Commission (FTC.gov), your State's Attorney General's office (http://www.atf.gov/files/publications/download/p/atf-p-5300-5-31st-editiion/attorneys-general.pdf) and your local law enforcement agency.
If you are a Federal firearms licensee who believes your license has been fraudulently used, stolen, or compromised, please contact your local ATF field office as soon as possible for assistance. A list of local field offices can be found at: http://www.atf.gov/content/contact-us/local-atf-office