I'm a big fan of this, mainly because of the top 5 filter, but also because I tend to use Twitter as a centralised hub for much of my media consumption, rather than visiting different websites, so it suits this use.

I have a "reading material" Twitter list set up, including @newsycombinator, and I regularly scan this for this to add to Instapaper, which I then generally read when travelling.

Admittedly, the problem with this is that it means I'm a less active participant in the community here than I'd like to be.