WordPress (the software running this blog) is expandable through third-party plugins. For example, I use a plugin to sent a tweet when I post something here. You likely see many others who do a similar thing.
Twitter recently changed its API invalidating the plugin I had been using. This is a problem when the products of different companies can be combined. It took me a while to find a provider who had made the adjustment and located WP to Twitter. If you viewed this part as a consequence of seeing a tweet, you know who to thank.