Until the End of the Internet
37signals.comWhile poking around to see if HEY email is right for me, I noticed this at the very bottom of the FAQ page about expected support for HEY. I think it's a pretty noble goal to support your products until every other customer has left or until the internet is over, whichever comes first; I wish more services were like this.
Are there any services that imply the opposite? Isn’t everything supported forever until it isn’t?
I interpret it as "we won't kill our stuff if people are using it" which is a common enough practice we have webpages dedicated to the Google Graveyard and whatnot.
I don't think anyone has or is going to build a product and advertise "We plan to stop letting you use it (even if you want to pay for it!) whenever we feel like it." This pledge existing (which, I agree, is a 'trust me bro') tells me that there is a thought-out effort for the support window.