Twitter search sites: The best and the rest

Collecta is a new real-time search service that scans Twitter and many other sources, including mainstream media sites and blogs. Its best features are its super-clean and simple interface, and the fact that it lets you run multiple searches at once, so it's great for monitoring a number of topics during the day.

Collecta lacks an advanced query builder and it's sometimes slow to get cooking on a query, but it is shaping up to be an extremely useful tool.