Whenever you search information about some product you get bombarded by CEO optimized shopping sites and it is hard to get some real information about some product. If it is a really popular product then just adding +review could help you get closer to what you are looking for, but still with lots of unwanted web shops in results.
If it is not a really mainstream product but still sold on thousands of web shops then it is almost impossible get anything other that web shopping results. Sometimes adding +wordpress or +forum helps, but not always.
So I'm wondering has somebody came up with certain set of query options that would filter out web shops? Maybe something like -shopping -cart ? Yeah, it is not that simple. If there is any search kung-fu master please share your kung-fu :)