Sometimes it makes me ponder. Depends on the feedback. If I suspect they're paid, or bots, or whatever, I usually dismiss those. Someone that has an or-gasm telling how great a product is might be a bit overboard. Sometimes reading several gives you a clue on what to expect.
I also find that depending on the product, it makes a difference on how many reviews there are. If a product has 3 reviews, that doesn't give me enough sample size. But say, 4,000 reviews and 90% say a product is good, it might hold some sway. Then again, if seemingly every complaint (which just the complaints usually tend to dominate reviews sometimes) or most complaints say something like "bolt on outlet is weak and tends to break off" would lead me to question the quality of at least the outlet bolt.
With all that trash said, I view someone from the forum, or someone I know who has actually tried something, as a more valid opinion than people I've never heard of or have no idea about. Yet I take it all under advisement and decide on my own.