80,
One difference – if I ask the fellow next to me what to do if I missed Ya’aleh V’yavo, there’s a certain degree of accountability, because I know who he is. An anonymous blogger has nothing to lose if he’s wrong.
I know, I often say what I think the halachah is here, but I don’t expect anyone to follow l’maaseh, and I’ve said that a few times (and in a case where I know I’m right, it’s not my issue anyhow).
I totally agree with you and deiezooger that discussing a halachic issue is different than getting a psak.