Have you ever heard about "big banks and megacorps lobbying for centralized, electronic, traceable currency"?

There are effectively as many (or more - depending on your world view) "big banks and megacorps" who would prefer anonymous, untracable cash, believe me.

Keep to the point. And the point might just not be "big banks and megacorps".

Are you out of your mind?

there are scaling up problems with some stuff. The problem with us is to see the scaling-up issues for particular case and you are not particularly helpful :)

Yes, but how does this connect to online voting? With population size I may almost understand (probability of malicious people present growing, then again also the talent pool to choose from for designing the system) but with density... Would you consider online banking somewhat connected with population density?

Estonian system does not have electronic receipt. But it seems to be a good idea to adopt - something signed by government secret key would eliminate a number of attack vectors and make indeed possible pulling them together at some point. The obvious problem of potential vote-buying is eased by allowing everyone to vote as many times as they want (there was a 58-year old woman voting 553 times last time, when she was called by election authority to check if anything is wrong and to inform her that only the last vote counts she said she knows, but she just likes the procedure) and if you vote on paper then this will be considered to be the final vote.

But as said in other comments we do have national id-card with crypto chip (with which I can also give digital signatures legally equivalent to physical ones, access my bank account etc) which makes it all easier to implement.

I have voted online for three times now in Estonia (well, once from abroad). By the last elections most of my friends as well as family did. Convenient as hell.

It is always a good idea to discuss even the theoretical attack vectors but for me (considering myself somewhat tech-savvy, lacking tinfoil hat though - I even have a google account) it is secure enough - indeed, I would welcome the same scrutiny on paper-based voting. The fact that there are ways to hack into a bank account will not make me abandon my online bank credentials.

25% of the votes were cast online during last parliamentary elections couple of months ago - it is really not the electronic voting by itself one should concentrate their thoughts on but the design of the system. Estonian one is worth studying.