You’re relying on a lot of trust from your users here, if you’re the person that decides if they have kept their pledge or not. Also, not having a list of supported charities and just writing a blog post to prove where the money has gone is also asking a lot.

Instead, I would rather have your other users vote on whether a pledge was actually fulfilled, and have some better method of distributing the money to charities.

I have no idea how will the tool know that I "succeeded": failing is covered in the FAQ, but not succeeding.

Don't forget to update your footer

What charities are supported?