Gig websites like ClearVoice, UpWork and Fiverr ask for an email ID and sometimes a phone number. Payments happen via PayPal, so they don't even need to ask for a bank account number, no matter where you are in the world.
However, the registration process of Appen required me to provide them with a scanned copy of any one of my government approved ID cards like a driving license etc. Lionbridge required my phone number, my home address, resume with all dates of previous employment mentioned accurately.
This extra information required by Appen and Lionbridge, made me suspicious. Is it ok to provide such info to companies located in another continent? Can't they just ask for the email ID associated with my PayPal account? (because PayPal would already verify who I am).