Well, I wouldn't say great, merely useful.

The rant is because I'm trying to provide a balanced view of it without coming off as a fearmonger. TPM is certainly not without its uses, but it's a leash that can be yanked on. Under Windows, you're fully in Microsoft's world and they will yank that leash. But given the right leverage and circumstances, that leash can and very well may extend into Linux as well if you allow the software through with it.

Be careful. Use it if you will but remember what it is capable of.