After teoma [1], here is wisenut [2], they seem to have similar approach
with their grouping system, also a nice feature of wisenut is "more page
from this site".
Will one of them become the new google (aka the new altavista)? :)
[1]
http://www.teoma.com/
[2]
http://www.wisenut.com/
--
~~Yves