I'm looking for opinions on whether microformats should be used to name JSON elements. For instance, there is a microformat for physical addresses, that looks like this:

<div class="adr">
    <div class="street-address">665 3rd St.</div>
    <div class="extended-address">Suite 207</div>
    <span class="locality">San Francisco</span>,
    <span class="region">CA</span>
    <span class="postal-code">94107</span>
    <div class="country-name">U.S.A.</div>
</div>

There is a document available on using JSON and Microformats. The information above could be represented as JSON data like this:

"adr": {
    "street-address":"665 3rd St.",
    "extended-address":"Suite 207",
    "locality":"San Fransicso",
    "region":"CA",
    "postal-code":"94107",
    "country-name":"U.S.A."
},

The issue I have with this is that I'd like my JSON data to be as lightweight as possible, but still human readable. While still supporting international addresses, I would prefer something like this:

"address": {
    "street":"665 3rd St.",
    "extended":"Suite 207",
    "locality":"San Fransicso",
    "region":"CA",
    "code":"94107",
    "country":"U.S.A."
},

If I'm designing a new JSON API right now, does it make sense to use microformats from the start? Or should I not really worry about it? Is there some other standard that is more specific to JSON that I should look at?