Microsoft's MSN Search is a directory service that also returns crawler-based results from the Inktomi database. The most popular searches will return pages that are selected by the MSN Search editorial team.

MSN Search still allows you to register urls free. URL Submission is via the Inktomi database. Results are no longer supplied by the Looksmart Directory so it pays nowadays to rank well in Inktomi.

There is indication that MSN is preparing to launch their own spidering search engine - MSNbot is crawling the web indexing and adding pages to a database - so it is probably only a matter of time until that information is made available.