Keygloo Encryption program; any problems using it?

Does anyone know of any problems with using a program called Keygloo to encrypt, store and mail files? This program seems to be very easy to use, and it is maintained on the Keygloo server with a public and private key setup. Is there any problems with worms or virus or the like when you use this program?
Thanks for any comments,
Verncope
 
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