Were you on your own, trying to support these extensions? That might have been too much to handle, especially in the heyday of Connect - which is why we completely replaced it with a new app store called Marketplace. The big differences are (1) that all code is hosted by us, allowing us to review for quality & plagiarism, and (2) that we are curating the extension list (i.e., there won't be 50 Facebook login extensions).

While you had a bad experience, remember that there are literally thousands of people all over the world who have good income from this business.