This server has been running for 10 years and now it's not maintained anymore (may 2014), we apologize for the inconveniance.
You can retrieve references here:
Suhre, Claverie JM(2004) FusionDB: a database for in-depth analysis of prokaryotic gene fusion events. Nucleic Acids Res. 2004 Jan 1 ; 32 Database issue : D273-6. - PMID:14681411
Thank you for your interest in FusionDb