I always use Paypal whenever I can, It's great for buyers as you can chargeback with minimal fuss if things like this do happen.
Other than that use common sense and don't visit dodgy websites, also make use of https whenever you can.
Edit: Maybe name the website in question here so others don't get done over as well.
@Separ_ation started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I always use Paypal whenever I can, It's great for buyers as you can chargeback with minimal fuss if things like this do happen.
Other than that use common sense and don't visit dodgy websites, also make use of https whenever you can.
Edit: Maybe name the website in question here so others don't get done over as well.