The transfer of your password to the game site is an encrypted transaction. Someone in between can not see it, unless they have some way to unencrypt it. I would trust most popular sites do this, but would stay away from the un-trustworthy sits like G2G. Who know what they are using... Same with transfering your account info to the bank.

When on a website, make sure you see the URL start with https... that extra S on the end tells you it is a secure connection using SSL.

I also highly suggest using some wireless encryption, like WEP... easy to set up and stops people from using your Internet connection.

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If you feel you have a question, dont be lazy; make sure you have asked yourself first. Then search the forum, then just fucking google it to get as much detail as you can. You may then seek clarification on specific points from others.