frequency would be number of projects (with a certain amount of uptake) started divided by number abandoned.<p>That list isn&#x27;t so simple. Accelerator isn&#x27;t software&#x2F;service, refine became open-refine, and wasn&#x27;t a service. Wave didn&#x27;t seem to get a great deal of uptake (I think), and is somewhat superseded by google+ in-chat. I&#x27;m not sure how checkout differs from wallet. etc.<p>So in those case, there is a marked difference as compared to, for example, when google discontinued reader.<p>I also wonder how many of these projects are abandoned in name, but not in copebase? Google+ probably rebrands some of those, with a slightly different mission statement (new feature, rather than standalone product).<p>That said, I <i>do</i> dislike some of the focus on social-media. The facebook effect, I guess... We probably need more protection from it...