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@sp: why dont you restrict miner to ip address? Each buyer should tell you payment id, email and external ips which will be used. I vote for no fee for us who donated. Easy and safe solution in my opinion.
Quite a few people on dynamic IPs. You cannot restrict it based on wallet or IP. I can mine skunk in a pool, transfer directly to exchange, or to wallet, or at zpool for BTC. Heck, I can my in my home, office and farm (if I had one). IMO it should have some unique number to identify, so he would know who leaked it, and stop selling and sending updates to that person.
Two months from now everyone here remembers this skunkthing as a funny episode that happened in the summer of '17. 2015 there was a shark, 2017 it is a skunk. Looking back now, sak devs made one big mistake. They should have named it sharkneum. Billions lost there. Huoh.
On a crap like this sp_ makes more money by selling custom versions to noobs than mining all by himself, money can buy you a nice shiny 1080ti but not understanding how this ecosystem works. Rinse, repeat.
Again, I have nothing against sp_. Loads of stupid money floating around here, it would be even more stupid to not to grab a part of it.
Alone with the SIGT profit from before 5 days, a day of mining on 10-12 cards will have your investment returned and you get additional profit compared to open source miner. The algo is not going away, there will be more coins developend on the same base, so my best guess is that you will have another coin to mine with the same miner.
Coins come and go. SIGT had a great attention, at least compared to some other coins. Sure, for the long term I'd look into something as Bitcore (sp has a mod for it too), or may be some of the nist5 coins, yet it is not going away, there is the halving and potential pumps to make it worth it.
So while you may not have anything against sp_, essentially you are blaming him for selling his mods, based on the assumption that people do not get their investment back. Which is mostly false with such a speedup.