[support] River of news and contextual analysis

[Stereotactic]

Hi

I am a moderator on a forum focusing on Oncology (Cancer Specialties). 
We are in the process of moving to Drupal 7 based web site.

One of the key features that we are looking for is Oncology News. 
However, given the huge number of publications/blog posts/ Twitter 
Feeds, we are in a fix because the volume of information to be 
aggregated is huge.

I am looking for :

1) Some solution to parse these feeds, categorize them automatically,  
analyze the context in the text of the feeds (usually abstracts 
delivered in the feeds), and extract tag clouds.

2) These tags then may then be analyzed how they are linked to each other.

3) The most relevant paper (abstract/blog post) should then be able to 
bubble up to the top of the pile (and show as related posts).

4) We have implemented a system of rewarding the users with points so an 
element of human curation would be available to the most relevant posts 
in the proper category..essentially to rate the articles which have 
"bubbled up to the top". The idea is that the users avoid the huge 
volume of overload.

Is there any module in Drupal for this? (I dont have a programming 
background- I am an Oncologist by profession).

Thanks in advance!