So I don't worry too much about giving my user name out, or entering it into other HN members' apps. I did it, and I'm not worried about it really. It's not like run4yourlives is my bank id or anything.
What bothers me about the whole thing though is that I've now had it confirmed that HN is too big to trust anymore. Whereas before, there was a sense of kinship with people here - none of whom I've ever met - I now have to worry that some of them are just losers looking to exploit my trust.
That's worse than off topic posts and low quality comments really. It's an attack on the fabric of the community, and the value of the users. It's clear now that I must treat HN as I would treat reddit or digg or any other room full of potential idiots; people who would much rather exploit trust than build it.
Sad but inevitable I suppose.