Fraudulent Use of Wire Information

[bluemartinifan]

Hi All,
I have bought and sold several watches on the forums via sending or receiving funds via bank wire. Never thought much of sending my wire instructions to a buyer (including my bank account number and routing number) - until I had a buyer back out on me today - after I had sent this info.
I started worrying what this person could do with this information so I went to my bank and put certian controls in place - but I am still worried....

Am I worried over nothing? Can buyers with this info remove funds from a bank account?
Is this a concern - or am I over reacting? Do you use a bank account that is set up strictly for watch transactions - instead of a primary checking or savings account?