I was reading some reviews this morning (like I normally do) and came across another review where someone complained about the previous reviewers' comments about the provider they saw.

1) Is it appropriate to complain about other reviewers in your review?

2) Why does it seem some take previous reviews almost verbatim as beign 100% accurate without leaving room for personal preferences and subjectivity?

I might rate any given provider has having model quality looks, but that doesn't mean everyone else will think the same way about her.   To me, this is similar to debates guys get into over which celebrity is hotter, "Britney vs Christina Aguilera" or "Salma Hayek vs Jennifer Lopez", etc...

Thanks in advance for your time.  

Peace...

I agree that reviews are larely subjective, so statements of judgement (beauty, etc.) should normally not be brought into question.

it is because I feel the reviewers and reviewed are doing a jam job on the viewership.

Absolutely appropriate, it's freedom of speech.

I usually reserve my criticism for situations where the reviewer is obviously inaccurate in their description of services offered, and especially when it seems there is a hidden agenda therein.