Re: Electrum - Bitcoin client for the common users (friendly and instant)
electrum is beautiful and I love it 
now I have few address in bitcoin-qt wallet and few address in electrum wallet... how to merge wallets to have one with all address
now I have few address in bitcoin-qt wallet and few address in electrum wallet... how to merge wallets to have one with all address
You can export the private keys from the QT client and import them into Electrum. The problem is that those won't be part of your brainwallet then. I would just send all the coins to Electrum and use addresses from there from that point on.
Please present both sides of the issue. If you use the same Electrum wallet you only need to back it up once. Also, a thief only needs to steal your deterministic wallet seed once. I advise Electrum users to occasionally (at a time you determine, depending on your amount of coins and tolerance of risk) to make a new Electrum wallet, back up the new deterministic seed, and send all coins to it. If you import keys from a non-deterministic client, you need to back up those keys, or the whole wallet that contains them. If you prefer going to bitcoin-qt as the main client, you should be able to import the individual electrum keys into it too.