Priya
This is a welcome rule. Not to mention that such things also tend to be spoilers when other sites spill in the beans about what's about to happen in a show.
Having said that though, I often see TB particularly well behind the curve when it comes to reporting things. It's not difficult to squelch external sites when I-F's own sites are doing a fine job, but they're currnetly way behind - particularly in LifeOK's DsddSB, where almost all of the recent events there were reported on other sites, but never made it to TB. If TB is not doing its job, it's tough to tell members not to discuss things that they read on other sites, but don't see here.
It would be one thing if other sites get it out b4 we do. But it's totally something else if other sites get it out, and places like TB never do. It's not 'sometimes', it's often, and that I think is problematic.