It used to work ok, but it was recently sold again [1], and a week ago I found that "Discover" doesn't work anymore for some reason (shows 3 old links). There is no support forum too, so I can't even ask why is that.

Tried Diigo, but it looks abandoned, there are some glaring bugs too (recent links tagged "news" are from 2011, for example).

[1]: http://dealbook.nytimes.com/2014/05/08/delicious-social-site...