Service: Free online antivirus scanner on many engines

There is many situations when you can get programs via download, receive from Skype buddy or strange email attachment and exactly don't have antivirus or just untruest current on your pc.
What options we have?

1. Don't open/execute file ever
2. Run suspicious file on free downloaded virtual machine and delete machine after use
3. Or just scan online https://virusscan.jotti.org/

/Geecoholic