Personally, I don't see tolerance to be very relevant. I would prefer to use the word compassion: understanding other POV's before judging. I like to separate people from their actions. That way, no matter what the person does, how they choose to live, or what their beliefs are, it won't stop me from treating them like I'd want to be treated. Like a human being that deserves to be cared for and feel a sense of worth. I can't say that it won't affect how I see people whose views or beliefs differ from mine, as that's only human. Human beings make judgments about others, even sometimes those judgments that we're not entirely proud of.
But, I'd also say that I won't compromise or sway my beliefs in order to appeal to those I don't agree with. You have to draw the line between tolerance and morality somewhere, don't you? If I didn't stand firm in my beliefs, then wouldn't I be allowing others to choose them for me?
To answer the question directly, though, I'd have to say I think that taking the time to understand others allows people to realize that beyond all of the differences we have, life styles, religions, principles, attitudes, desires, behaviors... we are all people, not one of us any better or any worse than the other. So in that way, we are going beyond just tolerance of one group or another. By listening and understanding, we are showing that we value the person behind all the factors and labels.