It is apparent, not only from the pressures teenagers put on parents but also from thousands of text and Facebook messages supplemented by hundreds of smart phone calls a month they generate that they are irresistible target for our profit-seeking corporations as the latest fad (from this and that music group and this and that clothing outfits) is inevitable end of all this "must be part of/must have" shaping of future consumers and workers.
When enough is enough? We are taught to be permissive, sorry, accommodating, as long as safety etc. seem to be assured. Being alone, on a top of that away from electronic media might even suggest lack of being accepted by peers, a mortal sentence to many.
I (we) prefer to stick with one (maximum two) sleepovers a month, unless there is summer or other school vacation (in such case 1 a week seems reasonable). One pragmatic reason for that is that not too much of sleeping actually takes place during these sleepovers and teenagers are notoriously known for sleep deprivation, while - looking at medical science - they might actually need an extra hour or two of a sound sleep compared to ES kids.
The fact that our school busing operations are set up as they are, HS kids on the bus at 6:05 am, MS kids at 7:05 am, and ES kids at 8:05 am, i.e. in essence in reverse order to their usual bed times, doesn't help in this much either.
One of the fundamental fact in support of "drastic" limitation of sleepovers (either in parentally supervised ones own home or reliably supervised other kids homes) is the fact that after so many hours and so many sleepovers statistical probability that due to boredom and need for stimuli and novelty all kinds of undesirable thoughts and activities in essence inevitably come to the surface. Let's be honest: If they - regardless how good or academically etc. oriented children not only at this age, even adults and college students are - have some serious or desirable interest and hobby they can as well devote themselves being alone, at their own home, safe.
In every group of people, teenagers included, are those with different life trajectory we like our own kids to be on. Spending dozens upon dozens of hours together, often hidden in different places of often cavernous houses today family homes are children do not devote themselves to educational or career preparation activities or even "innocent fun" we would like to believe. Yes, even the best one of them are - naturally - tempted by the lowest common denominator.
So, to defuse excuse for your child being ostracized as "socially not well adjusted and accepted" agreeing to a one-a-month sleepover clearly satisfy that criteria and legitimate need. Outside of that there seems to be no clear or even identifiable benefits from having more sleepovers above the mentioned guidelines until some department in some university in government-funded study will suggest what benefits are there from sleepovers and how it relates to children being better prepared for challenges of tomorrow and future in general.
Note: Might that be possible to set up your website in the way that instead of "5 Moms agree with this" we read "5 people agree with this"? as it is not only moms or even daddys who read and comment here? Thank you.