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Suppose I read a sign in the street headed Psak Din which says that such-and-such a thing is forbidden (these signs never say such-and-such is permitted), with the names of a list of rabbis at the bottom that supposedly agree on this.

Can I ignore it? Should I go to the great effort of confirming that the rabbis really did agree to this? Does it automatically follow that if the rabbis really did agree on this, that I personally have to follow it? Do I have to follow it out of "sofeik" (doubt)?

Related question: Is it permitted to intentionally avoid reading such signs?

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Putting them up in the first place is forbidden (source / English). – Isaac Moses Oct 5 '11 at 0:54
@IsaacMoses The Beer Moshe forbids it also. – Shmuel Brin Oct 5 '11 at 1:51
up vote 7 down vote accepted

Pashkvillim (unsigned papers) that don't have a source are no more reliable than J.SE answers (if anything it would be worse as people try to bring sources here). As with all halachic advice from unknown individuals CYLOR before acting.

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"unsigned papers" - but the question is talking about papers with names underneath. Or are you equating them? – yydl Oct 5 '11 at 2:06
1. Many "piskei dinim" are signed by "the committee for purity and holiness" and other such names. I don't see why that has more reliability than "Tom smith". As to signed piskei dinim, one should still CYLOR because 1) there may be rabbonim who argue with that Rav or 2) he may have never signed it. – Shmuel Brin Oct 5 '11 at 2:09
Okay. Thanks for clarifying – yydl Oct 5 '11 at 2:38

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