Free question forum. To pay or consult?

There is a 'ask a free question' option available on Practo. I'm sure all the doctors signed up here know and have consented to the feature. Despite this, there are a few doctors who respond with ' consult online' or ' connect please' for simple questions asked. I've gone through 100s of such questions and answers where pretty much the same gynaec doctors respond asking us for a paid consult. I understand that sometimes, on a case to case basis, it might be needed to understand the patients history better to answer more accurately- I'm not talking about those questions at all. There are so many doctors here who genuinely respond very nicely to questions posted whereas a select few ask us to pay constantly even if other doctors have answered in a relevant manner. Do these doctors know that Practo allows us to flag answers where the doctors ask us to pay or consult? If you as a doctor will only answer if paid, then you can always opt out from responding in the free question section