Does it even matter whether a poster of ideals lives by them himself?
If they say (post) that they believe in a set of ideals then they should live by such ideals. I'm not assuming perfection but people that outrightly lie about how they live are hardly worthy individuals (imo). This ties in well with hipsterism: hypocrcisy should not be encouraged regardless of the ideals we're talking about (see liberal atheism).
It may make him a hypocrite, but that does not make the ideals themselves any worse or better.
Part of my answer is above, my observation of hypocrites is that they tend to hold few tangible ideals (reality was long forgotten). I don't expect people to fully agree on every ideal but I give praise to those people that can live by their ideals
(regardless of whether I agree with such an ideal). Whether one set of ideals is better than another then I refer you to this website's mainpage.
I, and I assume most here, find the exchange of thoughts more interesting than judging the virtue of others. If they are thinking of issues as these themselves, I am sure they do not need us to teach them self-reflection.
Exchange of thoughts can be a worthwhile pursuit but exchagning thoughts with morons is not worthwhile (imo, again). I've met few people that are able to self-reflect while being able to relate to a greater whole, I found that the ideas (not ideals here) on this website helped me to progress from mostly individualistic thoughts and consider them in a greater context. Perhaps I was taught how to self-reflect better than I had previously done, I imagine some others may wish to follow a similar path.