I just find it interesting with so many ways to handle bitcoins what are the possible ways to account for or exercise those coins?
Well, inactive accounts are just that, inactive. The customer still owns the funds.
The hosted (shared) EWallet provider can't know which customers lost their URL, but can know how many bitcoins are held by customer accounts that have become inactive.
At some point the EWallet provider might be tempted to use those funds (e.g., lend them out), but who knows. I suppose if the terms of service change at some point the user has the option of withdrawing those funds and anyone who no longer has access to the account (e.g., forgot, died, or lost the URL) then those funds could change hands after some reasonable period of time passes.
The golden rule -- those with the gold make the rules. In bitcoin EWallets, you are voluntarily handing your money over to someone else to hold. If you don't take care of your money, someone else will. Happens all the time .... like this:
-
http://www.abc.net.au/news/2013-02-26/banks-warn-customers-government-set-to-take-their-money/4541116
