The biggest problem with buckets are usually the people who use them. No descriptions, just scans of 9 cards in one image and you're forced to determine if you want to click to see the big one.
Not to mention, Photobucket is often slowed to a crawl.
I have my own web hosting, and use a free software to do my images. I also make sure they're labeled, and have a search tool to help people find who or what they might be looking for. I also have the image map submitted to Google so people can find them that way too.
-m.