Why add Microformats to my site?
With the rise of the semantic web, web developers and content authors who want to stay on the cutting edge should consider implementing microformats on their websites. Why, you might ask? Well, even though most microformats don’t do much of anything right now, that will probably be changing in the near future. As explained in the article, Bringing meaning to the semantic web, microformats give search engines and other services a way to categorize the content of a webpage. Rather than just seeing a page with some arbitrary content, search engines could use microformats to say, “aha, that‘s a resume” or “that’s an address card.” One example of a search engine already leveraging the power of microformats is Google Recipe Search – GoogleBot categorizes the hResumes that it finds and makes them searchable by criteria like ingredient and time to prepare. Hopefully the major search engines will pick up on this web standard in the near future.
So you want to start using microformats, but you’re not exactly sure how. That’s okay – that is what this article is designed to help you do. If you have a WordPress blog or website, you’re already well on your way to creating semantically rich sites. With that said, here’s the round-up of plug-ins to help you add microformats to your site:
4. MyGeoPosition
The MyGeoPosition is useful for anyone wanting to add location information to their site. This could be useful for a restaurant 
critic whose work includes multiple cities, a hiking enthusiast who wants to chronicle her favorite hikes, etc. This plugin will allow you to easily add the Geo microformat (which simply describes longitude and latitude) to any page or post. The plugin places a form below each of your posts where you can enter your city and region or pick your location from a popup window that uses Google Maps.
In addition to inserting the Geo microformat, MyGeoPosition comes loaded with options to do things like embed a Google Map into your post or to use your longitude and latitude as post tags.
3. hRecipe
Being something of a foodie myself, this is probably my favorite microformat WordPress plugin. It places a button in the visual editor that pops up a form where you can easily enter in pretty much any recipe-related information from your ingredient list to the nutrition facts (remember, Google doesn’t boost your rank for low-cal recipes!).
This is obviously the plugin for cook/bloggers. I could see some foodies making this plugin the cornerstone of their blog. It’s super easy to use, so dig in!
2. WP Customer Reviews
As social media has exploded, businesses have had to consider the fact that most of their customers are getting used to being able to interact online. 
Nowadays, most websites that offer some sort of product will allow visitors to add comments and reviews of their products. If you already have a website with reviews, why not make them standards-compliant reviews? Enter WP Customer Reviews.
This plugin allows you to implement semantically rich reviews and ratings on your site. As probably the most most fully-featured plugin on this list, WP Customer reviews includes tons of options. The respectable feature set includes the ability to choose only the fields that you want to include in your reviews, some nifty anti-span jiu-jitsu, and the ability to moderate each review before it goes public.
1. Micro Anywhere
This handy plugin allows you to insert two types of microformats into any post or page: hCard and hCalendar. It adds a couple of buttons to the editor window that bring up a wizard where you can describe either contact info or an event.
This is probably the most useful microformat plugin for the average blogger or small site maintainer. Most of us will find the need to talk about a person, business, or event at some point, and Micro Anywhere makes sure that we can do it easily and in a standards-compliant way.
The Conclusion:
Although it has taken microformats and other types of semantic markup a while to develop, they show promise. The more people get behind the movement and start implementing them on their websites, the sooner search engines and other data churners will see that semantic markup is a central component in the future of the web. So install a couple of these plugins, and happy semantic blogging!