You may not realize it but you have just opened a huge can of worms.
Address reuse is one of the most important issues in the entire Bitcoin ecosystem.
Address reuse is at the heart of the financial privacy, taint analysis, fungibility and coin black/gray/red/white listing issues.
This is one of my pet concerns as you can tell by my signature below this post.
Ideally address reuse should be forbidden. It is forbidden in some alt coins and they are better off because of that. But address reuse has become entrenched in Bitcoin.
For a lively debate of the issues at hand see how people responded when Luke-Jr (the Eligius mining pool) suggested we just gently economically try to persuade people to stop doing it (for the good of the entire Bitcoin ecosystem) read this entire thread:
https://bitcointalksearch.org/topic/miners-time-to-deprioritisefilter-address-reuse-334316If you follow my personal responses in the thread you will find me very hostile to the idea until I realized the importance of this issue. Now I am 100% against address reuse, vanity addresses and other things that undermine the long term survival of Bitcoin.
If you are interested in these very important issues please read the entire thread. However the most important post in the thread is this one post by Greg Maxwell:
https://bitcointalksearch.org/topic/m.3588908That one post took me from this:
[I believe Luke-Jr's proposal is a] Knee Jerk Reaction.
to this:
For what it is worth, I was totally against this proposal as well. This is one of the posts that convinced me this (fungibility) is a critical issue:
https://bitcointalksearch.org/topic/m.3588908Now I consider the proposal just a "baby step" in the right direction. We actually need to implement BIP32 system wide and come up with even more ideas to make it as hard as possible to implement those ideas that are floating around that will destroy the fungible property of Bitcoin.
The battle over the fungibility of Bitcoin is the battle for Bitcoin itself. If fungibility is destroyed then Bitcoin will eventually become just a footnote in history.
As I have said, if you remove the fungible nature of Bitcoin - as is being proposed - then Bitcoin becomes a collectible and is no longer money.
If you have any other/better ideas to help preserve fungibility then
we need to hear them now! Please!