Congrats on shipping this! Personally, I wish that social networks themselves offered bulk export of public assets for academic purposes instead of having people re-invent the wheel every time.

Just a heads up, IANAL, but make sure that you're considering Twitter (and other social network) API terms of service:

> If you provide Content to third parties, including downloadable datasets of Content or an API that returns Content, you will only distribute or allow download of Tweet IDs, Direct Message IDs, and/or User IDs.

> You may, however, provide export via non-automated means (e.g., download of spreadsheets or PDF files, or use of a “save as” button) of up to 50,000 public Tweet Objects and/or User Objects per user of your Service, per day.

> Any Content provided to third parties remains subject to this Policy, and those third parties must agree to the Twitter Terms of Service, Privacy Policy, Developer Agreement, and Developer Policy before receiving such downloads.

> You may not distribute more than 1,500,000 Tweet IDs to any entity (inclusive of multiple individual users associated with a single entity) within any given 30 day period, without the express written permission of Twitter.

[0] https://dev.twitter.com/overview/terms/agreement-and-policy