Which image file formats do you use in your geospatial work?

Over a year ago I put out a poll on this blog to measure what image file format people who frequent this blog use. At that time, I put the following in the poll: GeoTIFF, IMG, ECW, MrSID, JPEG, NITF, TIFF World and JPEG2000. These are the order in which the poll defined their popularity.

For this poll I combined TIFF World and GeoTIFF together and added PNG. I have noticed a dramatic down-tick in NITF votes. I believe this is likely to defense people not frequenting my blog as much as others more than what are really in the marketplace. Or, it could be the defense people voting against NITF as it is cumbersome and they want issues in the format addressed. Or... something else?

PNG is use in mobile devices and has a very solid showing.

JPEG2000 popularity has improved. You might think that JPEG2000 would hurt the ECW and MrSID formats, but the image format hurt appears to be IMG.

I did not post the final percentages from the last poll, but have posted the 2011 poll here.