I don't think that this site is going to "increase circulation for the source".
If you look at it, it is far from obvious that the content is being aggregated from other sources. Looking at the front page one might easily assume that this is all the sites own content.
There are no mentions of sources or links to sources on the frontpage. When you click on a link, you are not brought to the source, but instead to another page on the site which republishes the content from the source in full. Again it looks like this is the sites own content.
If you scroll down below the fold you eventually find a link to source but on the articles I checked this just links the the source sites main page and not to the individual article at the source site.
The links to the source are provided as is in the press releases (see my other comment) - I think they do this to boost Pagerank of their main site, not just the article.
If you look at it, it is far from obvious that the content is being aggregated from other sources. Looking at the front page one might easily assume that this is all the sites own content.
There are no mentions of sources or links to sources on the frontpage. When you click on a link, you are not brought to the source, but instead to another page on the site which republishes the content from the source in full. Again it looks like this is the sites own content.
If you scroll down below the fold you eventually find a link to source but on the articles I checked this just links the the source sites main page and not to the individual article at the source site.