want to advertise my blog but can't use facebook?

[MadSwami726]

i have a blog i want to advertise, but i was told it's illegal to advertise for money on facebook, for instance. you can't use it to make money. when you sign up to leave a comment on someone's article, it states you can't use it to make money.
my blog is free, but you get to read a first chapter or two and if you want the rest of the book you have to order it from amazon and that costs money.
can i still leave a comment with a link on someone's article leading to my blog if the subject in the article is related to my blog? it's a vampire story. where can if find articles or forums where i can leave a comment?

[Larry]

Try youtube