Wine reviews are everywhere; they are available easily over the internet from various websites. It is advisable to take their advice with a little caution as several of them can not be considered a credible authority in the scrutiny of fine wine. Plus I find it absurd to avoid experiencing a wine all together simply because someone else found it unpalatable. Who knows, maybe the reviewer is allergic to rose and doesn’t know it and then writes a bad review; don’t be surprised as this isn’t far fetched at all.
Personally I find it much more interesting if wine reviews are made by several consumers, who have actually tried the bottle. But to avoid a situation where the opinions of others can taint my experience with a certain wine, I normally go out and buy the wine, enjoy it (or not) then contribute to the wine reviews online so as to avoid a bias. It is usually exciting to have a totally different experience and taste for a certain wine against a backdrop of the thousands of people who have rated the bottle on wine reviews online.
A good wine review will focus on certain aspects of the grape, the wine region, its age, it aroma, among other things. You can find wine reviews online that focus on wines solely from a certain vineyard. Now from that perspective, the information can be very useful; but a published review of every wine under the sky loses much of it objectivity in my opinion.
I have come across free wine reviews in the form of regular news letters. Usually what happens is they send you a review of different types of wines. For instance you would get a review of the best three Red wines of the month, or the best three White wines of the months. Typically the free wine reviews sent in this manner, are of what is popular. I am yet to see a wine review which critics a vintage bottle or a much respected wine region. I don’t think they would dare.