While doing the HTML for my new template, I stumbled across a new meta tag <link rel="profile" href="http://gmpg.org/xfn/11" /> What's this for? I found it linking to this page, and throug...

I see this a lot on site title links in WordPress themes (probably because Underscores does it and everyone copies that): <a href="/" rel="home">Some Site Title</a> I cannot find eve...

I would like to know what are the main differences between Microformat's hRecipe and Schema.org's Recipe and how search engines treat each one. Besides the differences in code and the fact that t...

Are there some recent and reliable statistics about "Web use" (webpages using one standard or another) of these standards? Or an specific statistic about vCard (person and/or organization...

I want to suppress the web browser's default tooltip display when a user hovers over certain links and elements. I know it's possible but I don't know how. Can anyone help? The reason for this is ...

I've done quite a bit of research but I can't understand the exact relationship between the 3. Also, now that W3C has officially recognised RDFa, would you recommend it over Microdata, taking into ...

At the bottom of my site I have a contact link which has hCard Microformat data attached to it. The data has the name, org, role, url, and email. Should I also have a Schema.org type here for sea...

Is there any difference between using one of this technologies? I'm building now a site using HTML5, and I'm having hard time to decide which one of them to use. I cannot see any difference betwee...

I was wondering if there was yet a Microformat for a business's hours of operation. If not, who do I submit a standard to?

What do you think is the best way to markup a snail mail address? I found some different options such as: <div class="address"> <span class="name">Mr. Bob</span><br/> <s...

I am using time tag to define a time—seemed like the right approach ;-) My problem however is the value I want to place within the time tag is NOW: the present. I get this validation error: The t...

So recently am reading a book called Adaptive Webdesign and I came across something called an hcard, hcalendar and I went to it's respective documentation page. Now the question is am not understan...

Is there a microformat for basic natural language process that has tags for sentences, words, parts-of-speech, etc...? I have searched the web but could not find any.

On the footer of my client’s website I have his address and copyright notice, and under there is the address of the webmaster. With both I will use the hCard microformat. With which of them I sho...

Semantic HTML makes it easier for Google to crawl and 'understand' a website but what about microformats? Are microformats any more semantic/crawlable then standard HTML markup?

Do you use microformats in your web projects? If yes then why? If no then why? If yes then for which things do you use? Is there any alternate of microformats in HTML 5 ? I haven't used ...

Do you use any of these technologies? Which ones are current and hence sensible to include in a site? Documentation on any seems to be relatively sparse, and usage of any of them limited, as...

What are common methods / official standards for surfacing event or calendar data? My use case is that I want to aggregate event information from several different websites into a single calendar...

I have implemented hAtom microformat on my blog. At least, I think I have, but I can't find any validator (or any software that uses hAtom) in order to determine if I have done this correctly. A Go...