My favorite tech news "aggrefilter" Techmeme finally added a search function. It provides search results in reverse chronological order, but only for items that have appeared as full headlines on Techmeme.
Techmeme creator Gabe Rivera explains the new search function, which was developed by Omer Horvitz:
There are two overall modes of searching, depending on how "close" a result is desired. The default mode only returns matches occurring in the title or the first couple of sentences. Searching for "Yahoo" in this mode typically return stories about Yahoo. Unchecking "Search title & summary only" on the result page (or the bare bones page) enables search of the full article text. In this mode, any article simply mentioning "Yahoo" will appear.
Narrowing results by source url, author, date, and other attributes is also supported. For instance, "sourceurl:http://searchengineland.com/" returns posts only from the blog Search Engine Land (as seen here). A concise list of all the search operators involved is available through the "Advanced" link on a search results page (or again, on the bare bones page).
What's next? Search for Techmeme's sister sites are planned but not active as of today. Also on the way are RSS feeds for search results, the simplest kind of search "API."
See also: TechCrunch