Reading Review Posts - Paid or Not

Problogger had an interesting discussion going on a couple of days ago on the topic of Reading Paid Review Posts.

I found the topic most interesting, because I write reviews on a wide range of products - some paid, some not. Does that mean some review posts are worth reading and others are not?

If you subscribe to blogs via a reader and you recognize a post as a "review" do you read it?

When it comes to MomGadget, all my review posts are obvious from the title alone because I've chosen to name them the specific item name - with "a MomGadget Review" following.

Some of the posts are paid reviews while others are actual products that I personally try and/or use.

I managed to be lucky enough to be found by a PR firm that sends me items from time to time to examine, test and review. Does that make my reviews less readable? Less interesting?

This topic has genuinely sparked my interest because I would like to know if I am wasting my time, advertisers money and my readers interest by writing them.