For most people, &quot;online&quot; means &quot;the web&quot;, so roughly two decades of online services (1975-95) have ceased to exist. This includes FidoNet, Usenet, Prestel, Teletel, CompuServe, AOL, Prodigy and too many others to mention.<p>Of those, only AOL still seems to have any mind-share, and that&#x27;s probably because it eventually provided internet email and browser-based web connections.