I see a lot of blogs that copy posts from other blogs and give them a 'source' credit (especially tech related blogs). What's the etiquette for doing this? I write my own posts for all my sites, but have noticed more and more people copying my posts word for word, and ending up higher in SERPs than my site.
If you base your writings on someone else's you should credit them by giving them a link. You should never copy someone else's work verbatim unless you have their prior approval. You could get into all sorts of copyright problems if you do.
Give credit. If people are using your content read this post http://www.blogged-out.com/2007/03/06/take-steps-to-protect-your-content/