Not the main point of the article, but he makes a comment that doesn't sit well with me.<p>> Also for SEO consideration, rel="nofollow" is also recommended.<p>If you are linking to another site, that helps said site's SEO ranking. If you use this in a way that the search engine views as cheating, the other site is penalized.<p>But as long as you and the other site are being fair, then you SHOULD link to them - they are obviously providing good content that you think is important, so why try to hog the credit and not give them the ranking they deserve.<p>Sitye like Stackoverflow do this to cut down on spam, (and perhaps because they want Google to view them as the original), but for a blog or whatever, why would you recommend this?