Last week Google updated their TOS in a way that could affect OpenLayers:
<div><br></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><span style="color:rgb(68,70,73);font-family:'Open Sans';font-size:15px;line-height:21px;background-color:rgb(255,255,255)">"This update clarifies that you are not permitted to use or provide any content provided by the Maps API in an API that you offer to others, even if your implementation provides substantial additional features or content."</span></div>
<div><span style="color:rgb(68,70,73);font-family:'Open Sans';font-size:15px;line-height:21px;background-color:rgb(255,255,255)">See </span><a href="http://googlegeodevelopers.blogspot.com/2012/04/update-to-google-maps-api-deprecation.html">http://googlegeodevelopers.blogspot.com/2012/04/update-to-google-maps-api-deprecation.html</a></div>
<div><br></div></blockquote><div><br></div><div>This kills the Google layers, doesn't it? It is probably a direct reaction for all large websites flocking to OSM, OL and Leaflet as a result of the end of the free Google Maps API.</div>