Ah a phishing scam then.. if you only entered your steam login/pass into the scam website then it must mean that your password was the same for all those sites, once you have retrieved all your accounts ensure the passwords are kept different.
A password system you can use if you have trouble remembering passwords is to have passwords that start the same however there is a unique factor to each.. e.g:
Base password: £Sc00By[]
XI password: £Sc00By[]893
mycrysis: £Sc00By[]562
crymod: £Sc00By[]921
This means that you can keep a written record of the passwords like this:
XI password: 893
mycrysis: 562
crymod: 921
and as long as you remember the base password.. then all you need is the unique number.