I use the CF feature a fair amount for slideshows while the crowd settles down. With 11 folders of 128 images each maximum, I can fit about 1400 images on a large enough flash card. The 48mb card that I use most often has around 500 images on it. Each folder has a theme, from Disneyland to Test Patterns to (ahem) Batchelor Party. Typical 300k jpegs look great! Setting the slideshow for 5 seconds/image yields about 11 minutes per folder. Plugging the CF card into the LT150 enables it under the source menu.
The logo that I use currently is a shot of a field near my house that I took last Christmas at sunrise. It took a fair amount of fiddling to get the jpeg down below 64k- the size limit for logos. Up close, you can see the artifacts, but at any reasonable distance, it just looks like a wavy sea of green with a pastel blue sky above.
You can also use a bmp as a logo, but it will look awful blown up to xga resolution, unless it is a simple graphic. I tried the classic "Indian Head" test pattern in both bmp and jpeg modes, and it was way too jaggy.
BTW, the CF slideshow feature isn't PC-centric; I did all the editing and loading on a Mac, just plug the card into the USB reader and it shows up on the desktop, like any other storage device.
If you like text instead of pictures, the LT150 does handle _very_ basic html, but using a USB mouse is far easier than trying to click on links with the remote.
apg