I have a big list of Twitter users stored in a database, almost 1000.
I would like to use the Streaming API in order to stream tweets from these users, but I cannot find an appropriate way to do this.
Help would be very much appreciated.
You can track 400 filter words and 5000 userids via streaming api. 
Filter words can be something apple, orange, ipad etc...
And in order to track any user's timeline you need to get the user's twitter user id.
Streaming multiple tweets - from multiple users? - Twitter API