Twitter also killed it with their new API. The v1.0 API used to allow you to fetch tweets without authentication, which allowed you to effectively use it as an RSS feed, convert it to a feed in whatever format you wanted, or build converters and visualization methods for other people. I guess they want to control the ecosystem of what people do with Twitter data, which is completely contrary to the notion of RSS whic…
Sites like rssitfor.me still works to get RSS feeds for twitter IDs that you follow. Site seems overloaded most of the time though.