For your first question I would suggest to change your password and maybe scan your computer.
Your password should have big n small capitals , the harder the password the harder to hack you.
Never click on any links you get , exept the ones you really know. If you click on a link and it tells you to put in your username n password DONT DO IT.
Make sure that up in youre adressbar there is the
http://www.gaiaonline.com first!!
I hope I was a little help and my English was understandable. If there are corrections to make, om me and I will edit my post immediatly.