Feed Analysis

Well, this is post is more a plead for help than a real post.

I need to analyse a RSS feed that I have been generating by searching for twitts related to DoS and DDoS attacks. In order to do it soon and with not so much effort I would like to avoid programming something (may be using feed parser or XML_RSS). What I would like to do is:

1. Get the average post per day, week and month
2. Get the average for a specific week and month
3. Get the all items for a specific date
4. If possible, to graph the number of items by day, week and month

If somebody knows a webservice to do that, please let me know to my e-mail, by a comment here or just send me a twitt. I would really appreciate!