Two reasons I can think of. One: he has a right to his Copyright just like any other writer.
Two: Free Republic doesn't allow certain types of content to be shown mostly video. So to see this content one must leave FR or NOT see it at all.
Oh and I don't think he has forced anyone to go anywhere to read his blog. One can choose not to click the link. You are free not to read it.
Simply because you wrote something doesn't mean you have taken the legal measures to copyright it. According to fair use you don't own the words no matter how you string them together.
Two: Free Republic doesn't allow certain types of content to be shown mostly video. So to see this content one must leave FR or NOT see it at all.
FR typically doesn't allow porn, racist or excessively violent videos. If that is what he has on his blog then he shouldn't be flogging it here.
If you are condoning blog pimping then you are the type of person who says nothing about petty theft because "it was just a magazine".
Many (not all) of the bloggers are not using there own material but simply using there blog to link someone else’s You-tune video with no original content.
They may he free to do so, but others are free to post the link directly.