Ontario based Otavo is in the final couple of weeks of private beta testing and will be launching in May. I have been testing the service for a few days.
It is a new social bookmarking site with an interesting twist. Users can group tagged bookmarks under “quests” which are public search/research tools. Pete Cashmore saw it in March and calls it collaborative web search. I think that, like Wink, it shows the power of user generated tagging to produce good search results. Once the knowledge base is populated, many people could use this as a resource, and link to individual quest pages.
If you are interested in trying it out before launch, enter your email on the home page.