Hi everyone! I have a sily question, and it is partly off topic, but I'd really appreciate some help on this.

When I upload my icons to my image host (photobucket.com) and post them on various communities, people keep telling that they are only saving as .bmp files. But, I saved them to my computer as .gif and .jpeg files. And when *I* try to save them off the page I posted them at, they still save as the files they should be. Is it the image host, or other people's computers? Can anyone explain what is going on, so I can try to fix whatever is wrong? Thanks.