Before i lost 0.005 on blockchain cause i forgot my password ,and didnt copy the key to bring back my account,
Now every info of my wallet i save it on my notepad ,i dont want to loose btc again
Do you really depend on the passwords for you wallet ? That's not exactly a security measure ,you should probably back up your wallet keys and phrases the very first time you create an online account for a wallet.They'e never safe.
There is a bitcointalk post about lost coins.. can't be proven, but there are plenty of stories of unspendable coins.. I sent 0.1btc to a vanity address last year.. saved the wrong key and a reboot of my computer lost the key.
Do you still have access to the vanity address ?How did you manage to save the wrong key anyway ? Actually you could have recovered the key you know the data isn't deleted or over written until cleared from the cache.
I lost around 0.08 that day, and it was because I'm too greedy to buy a good steam wallet with low price.
The site (
http://btc-market.net/) offered a low price Steam Wallet, and after I paid I never get the code.
That's not losing coins.That's being getting scammed.You lose coins to an address which no one has controls of or an address you on but lost access to it.Your case is different,being scammed does't count.
Because i use free wifi here in the mall and i don't know about the hackers monitoring it. And it becomes a lesson to me to just open my wallet on our house. 
