I don't mind that. What bothers me is not knowing what a service actually does. Either no summary on their website, or what is much more common -- in follow-up

I don't mind that. What bothers me is not knowing what a service actually does. Either no summary on their website, or what is much more common -- in follow-up e-mails. I sign up for a service, or an invite for a service, or even just for a launch announcement, and weeks or months later get an e-mail that makes no mention of what is being touted. But it's a plague in general. It's very common that Wikipedia has better descriptions of companies or software projects, even their commercial offering than the official website. Try looking up which language some piece of software is written in. Often, googling it + github and then clicking on the repo breakdown is the easiest way to find out.