I wish there were a couple of secure online Litecoin wallets available. I'm always hoping my computer won't crash and I'll lose my Litecoin client. I'm not really sure how to back up properly. Am I suppose to back-up the wallet each time a transaction is made? Should I send the backup file to an external drive or email a copy of the file to myself? I'm sorry to go so off-topic. I really have know idea of what will be the next big crypto currency. I'm trying to hold some coins of many types (as a high-risk fun investment) to play it safe.
You don't need to back it up with every transaction, the transactions are kept in the block chain. Just save your wallet.dat file (name it something you'll remember) someplace it will be safe!