This is great feedback. We had to cut scope to get gift cards out in time for the holidays, but we're going to enable people to add value to their gift cards in the future. For now, we really appreciate the double donation :)

We're also working to reintroduce sign up. Re: tips, there's an "other" field where you can add any amount, and we're going to keep A/B testing the entire tip flow to make sure it's as simple as possible.

Thanks again. We have lots of work to do!