Product review (4 stars): Good solution to cleaning your vent duct
I recently connected this attachment to my dryer vent hose and its exhaust duct.  Making the connection is a snap, although you'll want to research drilling and screwing into concrete or cinder block if that's your situation.

What is nice about this quick connect attachment is that, without unscrewing any duct clamps, you can easily disconnect the dryer vent from the wall to remove any accumulated lint.  The way my dryer vent is situated, a lot of lint accumulates at the junction of the hose from the dryer and the vent pipe in the wall.  Cleaning this junction is now a breeze, which means I'll do it more - that in turn means that I'll be operating my dryer more safely.

As a quick side note - I highly recomment pairing vent clamps with thumb screws as an additional convenience.  Adjusting vent clamps with a screwdriver can be maddeningly difficult, especially if the ducting is hard to reach.  The only improvement that could be made in this product would be if they could add a self-clamping flange to the inside half, so you didn't need to mess around with vent clamps at all.  Getting that clamp snuggly on the first time can still be a pain, but at least once you install this quick connect you'll only have to do it once.