How to properly use paid participation survey in my research? My field of study is business communication and I tried to gather responses for my survey by contacting target audience by email directly, however response rates were next to 0%. Now I'm considering using paid participation survey service to gather information I need (which is possible with some screening). 

1) How to include "paid participation survey" explanation in my methodology section? (Should I mention paid participation at all?)

2) Is it normal/generally accepted to use paid surveys in Academia, because articles I read on my field never mentioned it?
I'm not very familiar with paid participation surveys, but anyway the first step is always to seek approval by the ethics committee in your institution. They might require  modifications in your methodology if they find some issues, and their approval will ensure that your study complies with minimal ethical standards.

In a publication you should definitely mention that participants were paid, since this is an important information about how the data was obtained. In general you should always explain the details about the recruitment method. Typically it could be a paragraph at the beginning of a "data" section, I'm not aware of any strict standard about this.

I've seen many cases where participants are offered a gift voucher of some kind, so I'd say it's quite common to compensate participants. There are also many studies which use crowdsourcing platforms where participants are paid for their time. I assume that it's also common in clinical trials but I'm not in the medical domain myself.