Personally, I will rarely read a restaurant review before I eat out at a new restaurant. Very occasionally, if I am going to a new area, I will scan Trip Advisor for highly rated local establishments and possibly skim (aka "man") read a few of the recent reviews, but nothing more.
I don't tend to read the restaurant review amateur food blogs as some of them are either just pictures and a few poor words, or they are badly written with the stock "to die for" type descriptions.
The only professional food reviewer I will read is Grace Dent in the Evening Standard (UK) - only because she has a very entertaining writing style.
So who does read the reviews and do they influence your choices?