The MSN Search Blog last night announced that they have released a new search feature named "Search Macros." Search Macros are methods of building an advanced search query and saving that query for later in your search bar. The example the blog uses is searching for recipes. They provide a link to a pre-built macro named livesearch.recipes, which uses the follow advanced query;
(-site:toeatgoodfood.com -linkdomain:googlesyndication.com intitle:recipe prefer:cup prefer:serve prefer:cook prefer:food prefer:menu prefer:cookbook prefer:site:www.epicurious.com prefer:site:www.recipesource.com prefer:site:allrecipes.com prefer:site:www.foodtv.com prefer:site:www.recipesource.com)
This combination of advanced query strings allows you to exclude certain sites, look for certain page characteristics and also give preference to other sites. You can then click install this macro and the Macro Search will be saved to your search bar. You can also create your own Macros, for more information visit the MSN Search blog.