There are many places online where kids share their opinions about iCarly.

PBS Zoom: At this site, kids ages 9 - 13 offer a wide range of opinions about the show.

There are a lot of video reviews out there. Some are a treat to watch!
A review of I Quit iCarly by Seddlemania A blow-by-blow summary of the episode with opinions from this teen boy
Review of the iCarly Awards Review Seddiemania seems to have a real audience here as he describes what he likes about the show
Ten Reasons Why iCarly is a Bad Show A slideshow that offers a silly critique of the show
Nightmare Wolf TV Reviews: iCarly Review A teen boy offers a critique of the fan-girl videos --the "pathetic ripoffs" made by kids that imitate the format of iCarly