[elad]

It depends on whether your blog (or whatever it is that you're feeding through RSS) is meant to achieve.

If you're trying to make money from it through advertising, then the paragraph makes sense. However, your blog better be one of the top blogs in the world if you're to make a living off it, so what's the point. Also, it's clear from the comments here that many people (myself included) are turned off by partial feeds, so that will only decrease your chance of being successful.

However, if you're trying to build a name for yourself or your company, that is - you're the advertiser (of yourself, your skills, your thoughts), and the ads are the blog posts, then it doesn't really matter where and how people read them, and it makes the most sense to provide whole article feeds.