I believe it is.
In the blog world, people are very found of putting quotes, famous or otherwise, on the masthead of their blog.
What I find interesting and what my personal belief is, is that the quote gives a very small window into that particular person's soul (or character if you find the word "soul" a bit too deep and/or personal). It allows us a brief moment to contemplate the "why" behind the meaning of that particular quote as it applies to that individual.
A good majority of the blogs that I follow/read/subscribe to have a quote, famous or otherwise, and each of the quotes that I've read not only have I found to be very interesting, but from time to time, I try to guess (without prying, which is the only way to truly play the game) the reason why that particular quote is up there to begin with.
Take me for example. The quote I use on my masthead is self created: "A little bit of heaven in the middle of suburbia."
Long term readers of this blog already know this, but for some of my newer readers, the "why" behind the quote stems from the fact that I consider the neighborhood where I live (hence the name of the blog) a slice of country in the middle of suburbia. When the mountain and neighborhood is in full bloom, you can't hear anything of the outside world, and with the one major side road effectively closed off to traffic, you really do feel like you're in the country.
But with some of the other blogs that I read, the quote that those bloggers have on their masthead, have definitely piqued my curiosity. However, being the respectful person I am of other people's privacy, I simply don't come out and ask why they would put a quote of MacBeth on their masthead or a quote from Vikram Seth. Instead, I try to guess why that particular quote is there from reading their blog.
While the main reason for reading someone else's blog is because we find them interesting, a smaller reason (at least to me), is trying to find out the reasoning behind a given quote on blog masthead. To me, putting a quote, famous or otherwise, is the ultimate piece of privacy that we willingly allow ourselves to share publicly.
Think about for a moment.
We blog about what we are comfortable enough to share with others, and we briefly blog about the reasoning behind the stuff that we aren't comfortable enough to share with others. And even if we don't share a personal picture of ourselves because we believe that certain aspects of life should remain private, we will always give people people a very small glimpse to who and what we really are, simply by putting a quote up on our mastheads.
Quotes: the best window to the one thing that a private person can comfortably hide on a blog.