The site has published almost 50 articles as of date.

And it has done no link building so far. Maybe posted in a few forums in the form of signatures. But as you guys know they don’t provide any real value.

Due to the social media presence and updates given about the site’s articles. The site has about 20 quality backlinks each with great anchor texts and they are provided from well knowned sites in its niche. The site’s traffic is almost the same every time of the year. It may fall in summer a bit but that’s it(lets say from 100uv to 80uv).

Now after 2nd January. The site’s ranking has fell in a significant amount. Its now say from 100uv to 10uv. Its not that its competitors have updated with unique and great content. Nor, it has gained any odd backlinks that can decay its rank. So, Anybody any suggestions about this?