Search the OEDb Top 100 Education Blogs, with the ability to truncate the results. A clone of Raj Dash's Zen Habits mashup. Note that edubloggers don't often talk about the same thing. Some of the searches come up empty.
Searches through well over a dozen RSS feeds to look for keywords that you have set and also searches within the dates that you specify(month/year format)
Example of date format : 1/2007
Aggregates feeds in an OPML file into a master pipe, where all items from RSS or Atom feeds are sorted correctly by date. This is accomplished by creating canonical date attributes using Rename and Regex.