I have not seen the first two of this series but will be seeing the first two after this. I can empathise with the slightly negative reviews, in that the use of stereo types can detract from 'gay' people being taken seriously. However, I and my friends that watched it all found it both watchable and funny.
The plot is basically the new boy on the block uses a false web profile and more importantly a picture to entrap the hunk gay guy he first meets and falls for. Whilst the plot is 'waffer' thin and slightly ludicrous, I didn't care as it made me laugh.
Most films expect you to suspend a bit of belief at time and so long as you are prepared to play along you should enjoy the ride. There are some really good erotic scenes as well as a humourful oral. If you want a pc 'right on' gay activist type film, this is not for you, if you want a cheesy, slightly dumb film with a few easy on the eye scenes and some non too obvious gags then give it a try. Not the best gay film ever made but a few million miles away from the worst, hope they make a fourth one.