I agree with you completely! I personally really like this site, but I found myself wondering if the inclusion of w3schools in the references indicates that they are a sponsor/advertiser.
I would much rather see those seeking to learn more going to the real W3C wiki-based learn page (http://www.w3.org/wiki/HTML). I see from this discussion how passionate people can be about presentation and learning styles. Once you get beyond the learning phase I recommend sites like SitePoint (http://reference.sitepoint.com/html) and Mozilla's Developer Docs (https://developer.mozilla.org/en-US/docs). I use these sites all the time.
I would much rather see those seeking to learn more going to the real W3C wiki-based learn page (http://www.w3.org/wiki/HTML). I see from this discussion how passionate people can be about presentation and learning styles. Once you get beyond the learning phase I recommend sites like SitePoint (http://reference.sitepoint.com/html) and Mozilla's Developer Docs (https://developer.mozilla.org/en-US/docs). I use these sites all the time.