Web-based Crawler with Data Entry and word matching

I would like a web-based program that can do the following: 1. Allow the user to enter a keyword, date range (format: mm/dd/yyyy) and a set of secondary keywords. E.g. "iPad" and "12/1/2010" to "1/5/2011" and "good, bad, costly, useful" 2. Crawl the internet and collect (1) blogs and (2) discussions posted with the keyword in it and publised between the date range. 3. Able to create an excel file in .csv format with the following columns (1) date of posting (2) time of post if possible (3) contributor's ID (4) the weblink (5) the content of the posting (6) columns for each of the secondary keyword (e.g. "good") and put a value 1 if the secondary keyword is avaible, or 0 if it is not.