The only thing that took a bit of effort was figuring out how to insert a hashtag into the Twitter query. For others struggling with formatting a query, go to http://twitter.com/#!/search-advanced, construct your query, then the URL of the returned page will include the query you need. (BTW the answer is you need to use %23 instead of # to search for hashtags).
I think the module could benefit from a bit more help on structuring queries, but otherwise an excellent module that has helped to add a nice feature to my site. Thanks!