I started this website 3 months ago. 2 months ago I started to link it with about 3 links per day with blogposts on different blogs. Site now has about 150 articles with unique content. After 2 months this site is improving nicely, but I noticed something very strange. My main keyword "blue widget" is included in domain. The root is linked with 60-70% of the links with "blue widget" anchor. The rest is deeplinking to articles. But the root is not ranking for the "blue widget", another article is ranking for it with the title of "best blue widget". This article is not linked much , it has about 4 links, while the root has 42. The root is heavily optimized for "blue widget". Is it possible, that Google sanboxes URL too, not whole domain? And what should I do now?