Re: why cant someone just "copy" my wallet address? (real newb question - soz)
wow, now THAT is a bad idea lol. Letting your wallet file reside on someone else's computer so they can "manage" it for you? Yeah, I'm sure no employee or the owner or a hacker or anyone anywhere would even steal your wallet file and use it lol.
Most of us do put our wallet with somebody else and let them manage and earn money from our money ... I think we call it a bank
But since bitcoins and online wallets are not as well-established with the mess of procedural safeguards, it is of course better to just keep a small amount online for actual usage and transfer any excess to a secured offline wallet.