Hi,

>> 
>> Possibly I changed the default format on my Mac at some point in the distant past? Hmm. But others are reporting it works for them ...
>> 
>> - Bert -
>>  
> 
> Not here. I get TIFF. Googled a bit, searched into preferences, could not find a way to modify that. It could be a Safari issue, or most likely an OS X issue, as the same happens to me in Firefox and Chrome. FWIW, I'm using Safari 5.0.3 (5533.19.4) on OS X 10.5.8.


FWIW, OS X _has_ such a preference. The default seems to be PNG on OS 10.6 (and 10.5, iirc)
(see: http://www.switchingtomac.com/tutorials/how-to-change-the-screenshot-file-format-in-os-x/
 and http://secrets.blacktree.com/edit?id=2233 for possible formats)

So Long,
	-Tobias