@BUDMAN will say pass on that. That doesn't mean @BUDMAN hasn't smoked it before. If you haven't smoked it, don't, it tastes like absolute shit.
I tried smoking it as a desperate teenager, during the great weed drought of '92. That was a rough summer for @BUDMAN with good weed scarcer than tits on a bull and one of the things that kick started @BUDMAN into the world of growing bud.

I remember pushing the tar out of my bong stem with a pencil onto a piece of newspaper. "It looks like hash!" One wiff of it though and you knew that it wasn't hash, it was tar, but we were going to smoke it anyway. We rubbed the resin into some tobacco and I packed myself a pipe and gleefully inhaled the smoke from that sticky black substance strait down into my lungs. I would have been better of smoking a chunk of tyre rubber. It was the most hideous taste ever, like sucking the fart from a dead whales anus. I don't even think it gave me a buzz, I think I was just spinning from all the coughing and spluttering I was doing. Bad, bad shit. Seriously.

Here is an article about smoking bong resin and its health effects etc. A really good read. Enjoy.
http://maryjanesdiary.com/weed-resin/