Just my $0.02...
Many (and dare I say, most) black law school applicants in this country, irrespective of whether they score a 175 or a 157 on the LSAT, would still inevitably find themselves waging an uphill battle in the fight against some other applicants' insecurities and disappointments. I would suspect this to be true even moreso as the admissions cycle comes to a close. The reason I gave the first response to the OP that I did was precisely because I questioned the motivation for his inquiry.
There are several reasons why a black applicant would not post his/her LSAT scores, and the most obvious one that comes to my mind has been noted above. There are also legitimate privacy concerns, particularly given the fact that the black applicant pool is a smaller subset of each annual admissions cycle. Personally speaking - I am not posting my own GPA or LSAT for the same reason that I am not posting my real name, location, or other personal information. Any poster who uses the omission of LSAT and GPA to infer sub-par performance in either would be making a gross error in judgment. Then again, that same person is usually only looking to corroborate the assumption that he has already made about me after knowing nothing more than the color of my skin. If these are the conditions of the game, I choose not to play. I simply do not have time, energy, desire, or obligation to validate my decision to pursue law school or justify my admission to selective schools. I rather choose to spend the time engaged in activities and discussions that will actually be of use to me in the fall.
On another note -- I generally try to stay out of all AA threads because of the condescending and/or derogatory tone they seem to take towards black applicants. Particularly, I take issue with assumptions that people are admitted "just because of their race." In a country wholly built on a racial caste system, I find it hard to believe that any person residing in this nation -- white or black -- is not living with some number of conditions that, when reduced to simplest form, cannot be attributed to "just because of your race." It's hard for me to fathom a justification for a nation allowing race to be taken into consideration in every other sphere, every single day, and seemingly in every single way -- except when applying to law school. Thus, I would be more inclined to enter AA debates so long as posters on both sides realize that the knife cuts both ways. When anti-AA posters are just as skillful at forming cogent arguments in opposition to (and with response to) all forms of historic and contemporary white privilege as they are with railing against AA, I think the debate would be a worthy one.
In the meantime -- I am reading Booker T. Washington's Up From Slavery for the first time, and it is one of the most eye-opening, insightful, and well-written pieces of literature that I have ever come across. I have only had time to read it on the rush-hour train for the past week, but I am already halfway finished. This book would be of particular interest to people of all races/classes on both sides of the AA debate, as I believe it would give everyone a richer picture of the role that race plays (and, in fact, has always played) in shaping the opportunity structure in this country.