I’m sure this has been blogged numerous times already (and I didn’t notice), but the biggest problem with Google, for me, has been that searching for product reviews has never worked. The top 20 or so results would always include one or two real reviews, and a pile of shopping sites which offered customers a chance to comment on products - only there were never any customer comments.
Well, at some point in the last few weeks this was fixed - properly. I’ve been trying it with various classes of product - by searching for the product name along with the word “review” - and it just works! The first couple of pages of results are consistently filled with the most respected reviews of the product. I’m sure this was a non-trivial problem for Google to solve, but I’m equally sure it’s a big win.