It is a known fact that Guest posting is one the safest approaches when it comes to choosing one of the SEO techniques that works best in terms of ranking your website higher in the search engines. In your guest post that you send to me, you can add 1 backlink to your site, which will raise the value of your website in search engines, making your content easier to find via Google, Yahoo, Bing, and others.
The post you send MUST be well-written and informative.
Google Loves Content Written for "Readers" rather than what's written for promotion. That's the Key and I completely understand that. For a PR4 Guestpost on my blog, you are encouraged to Buy the Writing Extra, so I write a quality post and publish. Trust me, I know how to write the best guest post, one that meets Google's suggested guidelines :-)