If you care a little about your site's SEO or browsing the forums, you've probably come across the word google sandbox or Google Sandbox. The Google Sandbox is, above all, an experimental theory! That is, unlike algorithms like Panda and Penguin, Google executives have never acknowledged or denied its existence.

Google Sandbox is actually an explanation for the slow progress of SEO domains. According to Google's sandbox, after launching a new domain, you'll be in the sandbox for a while (between 1 and 4 months) to make sure that your content is quality and defines your core business.
The sandbox is actually a small sand playground where children under 4 years old play together safely. The term is also used because the Google Sandbox is only active for new and somewhat young domains.

/wp-content/uploads/2014/11/sketchup7_lg.jpg301SEO in St. Louis