This site handles photos in a simple manner as "siusaluki23" points out. But it can be slow for larger photo files, just give it time to upload. For posting slideshows or videos I use "Photobucket"
Some specific jpeg software (Bibble Labs, for me), is not handled well, and shows a negative type photo,
. If it does this you can "save as" in a paint program
to correct it.
butthead