When I tried Twitter's advanced search there were thousands of results, however when I received an estimate for Sifter, it said that the number of Estimated Activities is so low (100 tweets or less) that it is guaranteed to not produce any actual data and is automatically rejected. What should I do?
We advise you to log back onto http://sifter.texifter.com and create a new, revised estimate that will hopefully yield more results. It is likely that during some or many of the days in question there are zero or just a few tweets.
The estimate is based on a small sample from every day. If you narrow the date range you should get better results.