Hi Alfredo, I recommend taking a look at the Twitter Streaming API at http://dev.twitter.com/pages/streaming_api for an application like this.
Taylor On Wed, Jul 28, 2010 at 1:15 AM, Alfredo Baraldi <alfredo.bara...@gmail.com>wrote: > I'm creating an application that relies on public / timeline: this > application must must be select the posts that have a value > preceded by "$" character, eg "Today I buy $AAPL to the stockexchange > i like apple industries", and then i store them in a database. My > question is this: is it true that you can not because "the problem > here is mostly due to volume. A cron-driven php script will not be > able to filter the whole stream, since there is a limit on number of > returned results, and people post quicker than we can receive?. For > instance, if you search something rather generic twitter, there will > be thousands of new results after a few minutes; we can only fetch 20 > posts through public timeline" > > At this URL "http://stocktwits.com/streams/all" there is an > application that responds to my own needs, and reformulating the > question: with the current Twitter API is it possible to create an > application that aggregates all the Twitter messages that contain a > symbol preceded by the character "$" ? > Best Regards > Alfredo >