What's the halachic problems if any to rollerblade on shabbas? Do we compare it to biking (Kaf Hachaim assurs it)? Are there any contemporary tshuvos which discuss this? I have heard two problems if ...
Does BeRov 'Am Hadrath Melech (the King's glory is in the multitudes, ie., the more people praise HaShem together, the more glorious it is for Him) apply to making Kiddush? I've heard it said so ...