Our FC consist of two statics and a few other friends, and we sell all the time. Virtually every week we do sale groups. Just made a mil in the last two days for about four hours of sales.

Sales are awesome! For both parties. About 40% of our sales are not bad players. Some players just don't want to put up with PF groups or DF groups. Sure we have people block us. We joke about it all the time. People who block us are not folks we want to play with anyways. It's not like we are joining any random groups in PF to do content. We don't have to worry about randoms blacklisting us =p

We also have tons of gil now that we pour back into the economy. People are either indifferent or view our services positively. I think people who get upset about sales are either upset they cannot do it themselves or staunchly feel content should not be available to those who excel at making gil.

Most sale advertisements are heavily muted. Maybe a shout every few minuets and a PF ad. I would hardly consider that spam considering FCs spam way more often for recruitment.