I also agree that you get more motivated opinions when you have 100,000 followers and are somewhat of a celeb, but there are effective ways to use twitter to get some response. Notably, the hash tags. I saw your original tweet didn't take advantage of them, because you have a pool of followers who you deem vetted and trustworthy.

BUT, for those of us with relatively few followers, we can tag certain words to engage others in the twitterverse who might be searching on twitter for like-minded people.

Example: I was looking for good coffee in Chicago. There are far more places than I'll ever actually go to and was somewhat bored with reading 100 yelp reviews of every place I could find, but simply by tweeting and including #Chicago #coffee, I had local, twitter savvy coffee shop owners engaging me for my patronage. And to tell the truth, I appreciate that and will probably in the near future check them out. On top of these direct 'sales pitches', I also got some trusted feedback from other friends that I will place on my list of places to visit. Works well enough for me and takes less time than researching the history of every mom and pop business in town.