ken_b - 3:34 am on Jan 15, 2012 (gmt 0)
I am a bit skeptical about my ability to do a good job reviewing another site.
I wouldn't let that stop you.
You don't need to be an expert in every aspect of web design to offer worthwhile comments about a site. You may have an issue with area "A" on your site and still be able to offer real help about area "B, C, or D" on another site.
Spend some time reading the reviews there now and I think you'll see what I mean.
If you approach the review from a "what do I as a user find difficult, confusing, or easy to understand, etc" about a site you'll probably come up with helpful comments to make.
Sometimes all a site needs is someone to point out how it looks from a different perspective to make a real difference.