the basic of knowledge is curiosity
15.06.2013 :
Search Engine Optimization
Search Engine Optimization
Search Engine Optimization (SEO) takes care that the webpage is good ranked in search results.
URL Structure:
"-" is a word separator like " " and a search engine will search for each word.
No separaor is "_" which will be just ignored and the words are concatenated.
However, this is just an examples. You should have a look on the search-engine recomandation-list.