I usually have something nice to say about most things, even the ideas of some pretty crazy people. Perhaps less so online, but more in person. In my case the reason is not tolerance, but rather a habit that I have when I analyse things: when I see something I really like I ask myself, "Ok, but what's wrong with this?" I mentally try to take an opposing position. Many self described "rationalists" do this, habitually. The more difficult one is the reverse: when I see something I really don't like, but where the person (or better, a whole group) is clearly serious about it and has spent some time on it, I force myself to again flip sides and try to argue for their ideas. Over the years I suspect I've learnt more from the latter than the former. Externally, I might just sound like I'm being very tolerant.