Hi, it' a novice question. Suppose that I am going to write about a laptop..Is there a difference from the SEO purpose if I write about it with and without hyphen mark ( 15 inch or 15-inch laptop to give an example)? I am not questioning using hyphen in the domain name. But does it matter if I use either version in the title of the text or the text itself? Or if I take it further does it matter from the same perspective if I use a gap behind 15 ( 15inch or 15 inch ) ? This kind of SEO things is still a kind of blurred for me. thank you Petr