In an ideal world here is what I would like to see:

Button [Donate through JustGive.org] we only get 95.5%
Button [Donate through PayPal] we only get 95% (or whatever the real number is)
Button [Donate using Bitcoins] we get 100% of your donation!
OR Donate using Bitcoins to 17gN64BPHtxi4mEM3qWrxdwhieUvRq8R2r and we get 100% of your donation!

Having said that, I vote we now give them the 100 BTC and here is why.  My initial concern (that the Bitcoin donation was way down at the bottom where no one could see it) has been addressed.  They now have Bitcoins mentioned right there next to PayPal - what else could we ask for?  Anyone who actually has BTC to donate can now easily get their address.

What we want is publicity, right.  What better thing to be able to splash, tweet, etc. than "Archive.org got 445.04892494 Bitcoins, worth over $1300, in less than a week after simply adding Bitcoin to their donation options"

We can do this by adding our 100 to the 345.04892494 they already have.  So already having 345.04892494 donated only amplifies the effect of our 100 BTC - it does not diminish it.

We are all in this for the long haul and we have 99 more charities to go, right?

Finally, at the end of the day we are talking about just $312 $320 $319 here...

Let's get this one done and start on the next one.