As you probably know, Livejournal allows you to append
&style=mine to a LJ URL. Doing so causes the LJ page to be displayed in the style of the viewer's LJ (if the page admits of having user styles applied). This may (probably will) be different from the style that the page's author (i.e., the owner of the LJ) chose to present his/her journal in.
Question the first: How do you feel about using this when you are viewing someone else's LJ? Why do you chose to do it?
Question the second: How do you feel about others using this when they view your LJ? Why?
This is deliberately not a poll, just an open question; comment and discussion is invited.