Plus, how else are you going to pay Delicious' AWS bill if you actually succeed in buying it?
It's not your money!
I do not understand the point of this comment at all. Everybody doing 'Apply HN' is looking for outside capital. Pinboard has a loyal following that would probably be interested in additional value being added to it.
I think it is clear. When someone invests in your business, it is not your money. It belongs to the business and is there to help the business grow.