2010.01.15 13:40 "Re: [Tiff] eta for bigtiff support?", by Phil Harvey

2010.01.20 13:58 "Re: [Tiff] BigTiff as new file/mime type", by Edward Lam

The current state of handling TIFF files, sometimes identified with .TIF, .TIFF, .tif, or .tiff, is only issue for people who run an OS that is silly enough to define the file type and/or application by the extension

Are you referring to MS Windows here, which by some estimates, is over 90% of the OS market?