Cool Web 2.0 Sites

I found some cool web 2.0 sites on ehub today:

Interaction lets you chat with the visitors of your web site instantly. With 3 versions, you can use it for fun or for your business needs.

With blipstar, small business owners can easily add interactive store locator maps to their websites with this Google Maps mashup.

With Mountain Reviews, skiiers can browse mountains by difficulty, find resorts that match their abilities, & discover the best ski areas in their region.