I keep hearing about hypothetical for-profit products and people's weekend hobby projects being affected by this change, but does anyone have any example of an actual business that will be affected by this change?
Note that most of these APIs have 3 year deprecation policies and so will continue to be around; only the translate api is going away (and that's in December).
I have serious doubts that almost anyone would actually pay per translate (and if you would, it's likely you could work out a license deal independent of a public API anyway). It seems like the reaction to this has more to do with annoyance that another cool free service is going away and remaining anger over app engine pricing changes.