I frequently do not post comments on threads (even though I read them through thoroughly) simply because anything I might have said has already been said by someone else and frequently better. However, sometimes what someone else has said is so well said and I believe important enough to be reinforced as to rate a "***," again something I sometimes but not often do (at least not as often as I find posts with which I agree). Given the conventions already available here on XMarks, a "like" response feature is certainly not necessary (I don't really "need" or even strongly "want" one) but it might be nice to be able to let an individual poster know that you support their view/post in some way (other than a pm). But hey, "it ain't a big deal one way or the other"