The old adage is that you learn everyday of your life from birth except for a short break in school.( I think George bernard Shaw said this)
At a Podcamp Philly 2008 session "Personal Branding" that Matt J McDonald I got a great hint from Oliver Picher on Linkedin. If you notice most Linkedin profiles have the words "My Company", "My Blog" , "My Portfolio" in the section labeled "Websites". If you want to customize this you can edit it by changing the drop down to "Other" which gives you an option to add your own text label to the URL.
See how I did it on my profile http://www.linkedin.com/in/sbellamkonda
Why is this important. if your profile gets spidered it may be lost in a sea of "My Blogs" versus you can use the text box albeit limited space to think of a innovative /catchy name for your blog
