I know what you mean the number of times myself and others have gone to a great deal of effort to reply to someones post never to have a response I have lost count.
However I do think there is some great interaction on the forum although not so much lately for some reason, personally I don't seem to have a lot of time of late (partly due to this pesky 366 I started in January only 72 shots remaining) but hopefully once the cold winter nights set in there will be more activity.
Personally I still feel my photography is quite infant and don't feel fully comfortable with providing critique in the critique threads, I have good camera control (which is 10-20% of it) but my composition still needs a lot of work. So I leave the critique threads to the experts in most cases. Although having said that I do have an opinion so will make more effort
