Review two of the blog search engines (i.e. http://technorati.com/; http://www.ljseek.com/; http://www.google.com/blogsearch; http://blogs.icerocket.com/) on a nursing topic (i.e. patient medication compliance), note blogs features or functions. For example, does the search engine offer functions such as advanced search? What is the scope of the search engine? For example, does the search engine search the internet in general or only blogs written with a specific blog application?