Run scripts land permission - risk of allowing all?

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I have never disabled scripts on my land and I've never had a problem with it. It annoys me when people disable scripts on their land. Not as much as ban lines, of course...

No significant issue. It doesn't really diminish griefing possibilities (which are low anyway) but is rather a nuisance to your neighbours.

On my land I typically allow everything to everybody (object creation, object entry, script execution), but add a (rather generous) autoreturn period to prevent prim littering. Never had any problems with these settings.

I've had land in SL now for three years and have never had to disable scripts on more than a temporary basis. For most usage it's not necessary to do so and as you say can be annoying. There are also some limitations as to how effective this is, as there are ways around it if you know how.

I personally would not bother.

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run scripts PLUS object creation can permit sim killing grief.
Even object creation without scripts can be a particle emitting griefer tool.

So, object 'creation' is bad but object 'entry' is not so bad, when combined with allowed scripts?

Theoretically yes. In reality it happens very rarely and can easily be combated by temporarily restricting abilities if there really should be a problem. Object griefing is *much* less of a problem compared to dimwits of the "want sex! sex now!" persuasion.

In my time in SL (only 2 years, admittedly) I never had a first-hand problem with object griefing due to permissive land settings (but a lot of hormone-challenged passerbys).

correct.

even then you may consider a brief (maybe 5 minutes) auto return to allow people to rez an attachment but not to leave it there to harrass continuously. Remember that circumstances may arise where you don't get to log back in for a while. You don't want your neighbors to have to go through the trouble of calling a linden to rid your property of some buttheads griefing device.

Ok, understood, now, another question to complicate things a little more. Part of my land I use as a beach, more or less public although, I've found the only ones who use it regularly are friends of mine, which is fine too. My house is elsewhere on the same parcel. Basically, to make it work right, what you said, everything on the parcel needs to belong to me, or my group, I could not allow anyone else to rez/leave something there permanently. Right?

I would just leave the parcel open with a generous (4 hours or so) autoreturn. That should capture most situations and prevents permanent rezzing by others.

I'm using such settings on my parcel by the sea & it is working well.

If you really get a griefing case, you may think about creating a landowning group with certain permissions (object entry, script) only for the group, but that's not normally required.

I've been griefed several times on my property . . . when I was just a few weeks old on SL. One attacker attempted to "cage" my avatar, another attempted to "deform" it, one tried to spam the property with objects and certain particle phenomena. All of these are a real nuisance when I'm focusing on a build.

Anyway, object entry and scripting are turned off on all my properties to prevent this sort of thing. Autoreturn is set to 5 to give anyone building a chance to "pull back" anything of theirs that mistakenly lands on my property. I sympathesize with the flyers, but I really don't want to deal with griefers.

why not start a group, 'set to group' the land, invite your friends to the group, and set their group role to 'always allow rez'?
then your parcel you can set rez off, entry on, scripts on, and everyone is happy.

I've been in SL for 5 years and have owned mainland as well as estate land. To this day the only thing we disable is terraforming which prevents potential griefing in that respect. On our full sim (which is deeded to group as is the homestead) we have autoreturn set at 60 (one hour) mainly because we have a road for people to ride motorcycles on. We have not turned autoreturn on on the homestead as of yet. So far we've only had one person apparently attempt to live there without paying rent by rezzing a 215 prim treehouse next to one of our tenants. If this ever occurs again (and I'm sure it will at some point people being people) autoreturn will be set mostly at 60 also. The time will increased or decreased when or if needed. That is something that is determined by the behavior of visitors and personal prefences.

I always leave scripts turned on for all my lands, but have create objects and object entry set to group only.

This works well for most cases. The absolute most annoying thing is when your scooting around on your favorite boat, car, dancing cow, etc... and your vehicle stops dead...and you have to edit it to drag it off the offending land. If you're driving a multi part vehicle, like a battleship, it's nothing short of grief to put it back together once its a pile of prims sitting in a no-script zone. Pfft...sometimes I just leave it there and rez a new one and keep going. At least with ban lines you can bounce off them.

So, for all you people who don't like vehicles piled up on your property line, turn on your scripts and maybe people wont crash there.