We've been in SEO for 4 years now, and in the process, we created some amazing Web 2.0 properties with exact keyword match domain names across a variety of genres - including Marketing, Technology, Shopping, SEO, Finance, Construction, and many more. And what's more, we have kept adding content onto those properties so their authority kept rising. All the properties have, in effect, become mini-niche-article-depositories. This one is from WpSEOBuddy, so you know its great