I have one website were the main product page is one single page with several hide/show content. So, for example, I don't have a different page for the general overview, characteristics and technical specifications sections. Instead, I have three "links", all in a single page, that show and hide each section content without leaving the page. Is this a good approach SEO and user usability wise? I actually think that usability is great. But I'm not sure about SEO. Any thoughts?