Try blockchain.info
This doesn't meet the OP's request:
I tend to like having the wallet directly embedded into the url, no password, no login, no email.
This is not a requirement, but a prefererence.
What exactly are the
requirements?
or multibit
This doesn't meet the OP's request:
I have the need for a very simple ewallet
Multibit is simple enough.
But not an ewallet.
As you can't distinguish between a requirement and a preference,
You really didn't do a good job of explaining which were requirements and which were preferences.
your assumed Y is wrong,
Apparently.
your generalization may just plain suck and itself be the waste of time and source of misunderstanding,
Perhaps, but it was the best I could to in my attempt to decipher your explanation.
I think I was clear,
Apparently not.
anyway let's try again :
Ok.
Y= I want an ewallet,
An eWallet. Got it. I'm not sure you understand the difference between a wallet and an unsecured, unregulated, uninsured, bitcoin bank account that isn't subject to security audits or financial audits, but we'll assume they are interchangeable for the sake of this discussion.
it has to work like spare change.
This is meaningless. How does spare change "work"? This tells us nothing about what you are trying to do.
Forget about the url thing if it confuses you,
It doesn't, but that's fine. The URL doesn't matter.
I can login with username and password if required, I can even use an email.
Glad to hear it.
X= I want spare change for bitcoins, especially coins in my pocket don't say something meaningful about me, they're just coins, everyone has the same coins. It has to be very cheap, no mafia 100btc min money laudering tumbler, no server I have to run, no 24 hours delay manual transactions done by someone who doesn't want me to abuse his ewallet service as a service for spare change transactions with other businesses.
You buy candies to a grocer, then a blowjob to a hooker, the hooker doesn't know you like candies, and the grocer doesn't know you like blowjobs. How would they know the payment life history of your nickels, eh ? If you use blockchain wallet or multibit, both coud know because they just have to check the transactions in some block explorer like blockchain.info. Indeed you did A->B and A->C transactions, grocer knows you own A, he searches for address C, finds a hooker. They both work for sweeties and other sweet oral pleasures mega-company. Is there something wrong ? I want to avoid these types of situations. Very simply, I put my A money into a big pool, now it's D, E, F, G that pay for me and I pay a little part for them, my A address remains unlinked to my activities.
You are looking for a cheap, trustworthy, reliable, mixing service.
You send some bitcoins to the service.
The service keeps track of how many bitcoins they've received from you, but mixes the bitcoins that they've received from you with all the other bitcoins they receive from everyone else.
They allow you to send an equivalent amount of bitcoins from their service to any bitcoin address.
When done well, it can be nearly impossible to link the source of the bitcoins to their destination.
When done poorly, forensic accounting processes can find a high probability of links between the source and destination.
When done extremely poorly, it becomes obvious what the source is for each destination.
With such a service, there always exists the possibility that the service will eventually reveal all the links (either out of incompetence, malice, or cooperation with law enforcement).
With such a service, there also always exists the possibility that the service will lose the bitcoins (either out of incompetence, fraud, or to a skilled hacker).
Now that it is clear what you are looking for, perhaps someone can offer suggestions of a mixing service that they trust.
Personally, I wouldn't use any of them. Instead, I use wallet software that has coin control, and that allows me to maintain multiple segregated wallets. I use a new address for every transaction that I receive. If I don't want 2 transactions linked, I make sure that the sources funding the 2 transactions are not linked. If I want to make absolutely certain, I pay each recipient from a completely separate wallet.
I'd think that what you're looking for should be possible with any of the exchanges. You could create a wallet at BitStamp, BTC-E, Coinbase, etc. You could fund the account with "spare change". Then you could make payments directly from the exchange. The exchange will have information identifying you, but the coins that you pay with shouldn't be linked directly to your addresses in the blockchain. This provides a very large pool of users to mix the coins with, making any blockchain analysis much more difficult. Of course many MtGox users just recently discovered the risks of using such a service.