Fill with content your site with the most suitable solution. These two crawlers are developed to help businesses in case of difficulties in filling of content. If you have friends in Pinterest ™ and YouTube - just take their profile names and start the crawlers. They will take all the pins and videos from the profiles of your friends and publish them into your social network. Then just send invitations to your friends to join your site and you will have new actual content + new users very quick.