Well, after 2 days of fighting, I was able to validate the code for the blog and the RSS, I have left the CSS, because the truth is that while I’ve been planning just got bad habits that result in problems of validation.
Why is it so important?
Truly validate a web only thing it gives you an icon you can see below, since it works exactly like the website and may even be incompatible with some versions of browsers or earlier versions of the most popular.
It is a way to standardize your work to achieve in the future to follow a standard and that the websites are governed by it. Making life easier for Web developers, who are now scrambling to get webs with 3 or more browsers …
In addition to thus facilitate the indexing of search engines dealing with code like XML, to be well formed indexing is more optimistic.
What earned my site?
Well the first thing you need is free time and good luck 
Since the W3C URL can get down to work, following the steps gives us to solve the “validation errors”.
For Web feeds would be this.
WordPress + Validation
One thing to remember is that WordPress makes creating news in our HTML code and you do not really all that well, and the publisher have not provided us with rich work, getting malformed tags (not always).
usability, programming, XHTML, standard, validacion
Dependency injection with Guice
