I just want to let you all know: the Westward Ha tree is totally dead.
But it's still nice & strong...right?
The tree is massive so it's not likely that the weight of someone rapping off it would be enough to pull it down, however it doesn't look like the roots go very deep and it's my guess that a windy day will bring it down. As others have said it's easy enough to build an anchor anywhere else along the cliff and rap off of it. I think it's best to build gear anchors rather than start using another tree since if a new tree becomes the standard rap it will most likely suffer the same fate as the original.
On another note I will be giving a slideshow about Millbrook at Rock & Snow Friday May 3rd 8pm.