Personally I think banning signs wont stop people bringing them. Its like large guns and swords. They are not supposed to be on the floor, they are meant to be handed in at the desk and used for masquerade only. (This could have changed, but last time I checked, this was policy. So if I'm wrong don't jump down my throat like a pack of wild animals please.
) But people still bring them and walk around with them. Most people who bring these weapons (from what I've seen) are very sensible with them though.
(Except the large Bleach group in premier inn who were fighting in reception...-_-)
Limiting whats put on signs would probably be more beneficial. I must admit it gets tiring when people run at you with free hug signs all the time, especially if you don't want to hug them, you're made out to be an utter [Insert name here]. Its also not nice seeing signs saying things like 'Rape me!' or 'Will rape/yaoi for money/food'. Personally I don't find rape a funny or as many say 'lolz worthy' subject. :/
I agree whole heartedly about glompers though. I'm with you on that, Sephirayne. People need to stop and think for a second about the person they want to glomp. Do you know them? Do you know if they have a medical ailment? Do you know how they will react? Most of the times the answer is no to all of these.
I've been glomped by people while wearing a steel boned corset, knocked down stairs by glompers and my friend nearly had a £400 camera destroyed when he was cosplaying Jigsaw, as someone took a running leap at him. The worst part was that she didn't even apologize, just shrugged and told him not to bring a camera. Hes a photography student so obviously, a con is rife with oppertunity and he didn't expect a /stranger/ to leap at him.
I don't think its ever okay to leap at a stranger, even more so if they say no. Glompers need to think for a second, because sometimes they really do hurt people. If you want to leap at your friends then do it, but be prepared for mates to get annoyed as well.
Also, the yaoi stall scared me. I like yaoi, but some of the stuff he was yelling actually kept me /away/ from his stall! That and the large masses of flailing girls. XD
I understand that con staff are volunteers and that they can't police everything all the time, nor can they chase after people who do violate rules or guidelines, but honestly, a con is not an excuse to act like an ass/five year old or brain dead and people should use their common sense regarding signs and the like. :3