There might be interesting ways to combine sentiment analysis with other factors. For example, off the top of my head, combine it with the selectivity of the s

There might be interesting ways to combine sentiment analysis with other factors. For example, off the top of my head, combine it with the selectivity of the search word. If the sentiment is positive about a store, then it may be a good search result for a word like "sunglasses" which is associated with many sites. If the sentiment is mostly negative, then it may still rank very highly for keywords/phrases that are highly selective e.g. "decor eyes" while dropping precipitously for the less selective keywords. I.e.: positive sentiment opens up the umbrella, irrespective of how high the umbrella goes.