A blogger.com page is not in my domain, of course. I'm not clear why that's important - isn't the purpose of RSS to read/publish to other pages?
This is important because the tools used to retrieve the rss feed on the client-side are themselves restricted to a single domain, particularly the xmlHttpRequest object. While true that the intent and spirit of rss is a free-flow of information, browsers have yet to embrace and facilitate this flow.
JSON can come from anywhere, whereas XML must come from you.
Another workaround i don't hear much about, but have used in past uses a client-side page to mimic the functionality of a server. If the data doesn't change every 30 seconds (most feeds don't), you might consider simulating a server on you own pc. Active desktop webpages can pull data from any domain. The page should then convert the xml to json, and upload it to your server. Use a setTimeout or a meta-refresh to reset the page, and have the update bound to onload.
If i were just getting started, i would checkout yahoo pipes first. i think they even have examples of what you want to do.
you can also use a google widget to accomplish the same thing if you don't mind a small logo.
i think that once you overcome the 'domain dilema' you should have little trouble finding examples of json>html.
i hope this helps somewhat, i've been down the same path, and know it can be a bear.