Hi,
First of all, after some time playing with this, I need to say thank you very much. It is amazing how it works.
I found that the search is not getting the proper results when using the search with the “filter:links” on it.
I get tweets without links all the time.
The expanded url and the url is used by the photo, which is strange.
Example:
Unfortunately Twitter don’t provide 100% accurate data. They say:
Please note that Twitter’s search service and, by extension, the Search API is not meant to be an exhaustive source of Tweets. Not all Tweets will be indexed or made available via the search interface.
I think if you move to paid for services coverage is better … the cost of free 😉