middle class googled 110K for the month of september
Results 1 - 10 of about 310,000 for allintitle:middle class
Results 1 - 10 of about 344,000 for allinurl:middle class
that domain has a lot of potential developed. however, i am having a hard time envisioning what kind of end user that can go to. the .com extension would be extremely valuable as it would enjoy a huge benefit in indexing. but exotic extensions, including .info does not enjoy as big of an advantage when it comes to indexing. if it were a terrific site with great content, getting people to keep coming back, that domain is a benefit.
do you have development plans or are you hoping that an end-user picks it up?