For example, let's assume a string 'green apple'. Is there at least one SE (or, maybe 3rd-party site) which provides its statistics on how often do users search this concrete string?
3 Answers
It's highly doubtful any engine will provide actual numbers for this information, but Google Trends does provide enough to get a feel for a term's recent performance. Whether that's useful will obviously depend upon how precise you really want this information to be.
You can also use the Google Adwords Tool
answered Sep 13, 2011 at 12:00
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+1 - Also worth mentioning: the Adwords tool offers Global and Local approximations which are particularly useful, as the results generated by the tool can be exported in a variety of formats for tracking over time. Sep 13, 2011 at 14:19
And here's another tool: Google Insights for Search
it helps you to compare search volume patterns across specific regions, categories, time frames and properties.
