Incidentally, it's not that they don't like Photobucket; they use exactly that to display things here. But, they need .jpg or .gif photos of no larger than the size specified to submit to photobucket. It could certainly be done another way, but the contest operators don't want to quit their jobs to free up enough time to change people's 8 million different formats, resize them, decipher, edit and format their text, all of which would also mean owning all the various programs to do all those things... it's too unwieldy.
Just email the right sized .jpg shots as an attachment to the GOM address, along with your descriptive text, during the contest period.