I searched gis.se and found a *two year old* answer to a problem I have today.

But may be the old answer is no longer valid today because:

 - technical changes
 - license changes

What should I do to get an up-to-date answer?

Example: I am looking for a (stand alone) tool to convert raster (e.g. tiff, jpg) to ECW. I found a [two years old question with an answer][1]. 


  [1]: http://gis.stackexchange.com/questions/18369/how-to-convert-orthophotomap-to-ecw-file