I just laid in a new link in my Playtime box to my page on the Trueachievements.com website.
http://www.trueachievements.com/Lefty+Redbeard.htm

It's a new fun service that tries to recalculate an Xbox360 gamerscore based on how hard the actual won achievements are.
They explain it much better than me:

"We believe the harder an achievement is to obtain, the more points should be received.
We've decided that an achievement's difficulty can be accurately approximated by using a formula based on how many people have that achievement compared to how many people own the game. We also understand the phrase 'accurately approximated' is a contradiction in terms but are refusing to remove it on the grounds that it sounds impressive. From there we multiply the original points given to the achievement by our difficulty score and end up with the TrueAchievement score for that, for want of a better word, achievement. By adding up the TrueAchievement scores for all the achievements you have won, you get your GamerTrueAchievement. Of which you should be terribly proud. Unless it's only 1, in which case you are both a fool and disgrace to your family. We know this as they called the other day and asked to be disassociated from you."

Here's a link to their website, you have to sign up if you want to use them and it can take a day for them to read in all your achievements.
http://www.trueachievements.com