Cluster Search Engines - Favourite Links

I will update this list with new cluster search engine links as found

Once upon a time
Long long ago in the days when there were just a few standard well known search engines, luddites would ask tech types "Which is the best search engine? If you'd used Alta Vista, Lycos or HotBot, and a handful of others whose names escape me, you could consider yourself "up" on the latest in search engines.

Different place, Different Time
Today it depends on what you want to use the search engine for. Different search engines operate in different ways. What you want to use it helps to determine which type to use.

I've discovered some Cluster Search Engines -

Clusty
Kartoo
Mooter
Vivisimo