Well that's probably just due to lack of interest in the shows. Most Nicktoons made recently don't get a lot of talkbacks (or even posts in talkbacks) since most people on TZ don't watch since they simply don't like the shows or don't find them worthy of comment. The only real show that people comment on nowadays is Avatar (and Spongebob when it has new eps but only a few comments compared to Avatar's talkbacks). Everything else gets very little talkbackage. In fact the last show to even come close was Danny Phantom and that's gone. Could also be to the fact most Nicktoons made nowadays are simply just not interesting but I think that deserves it's own thread of comments.
Instead of just using this new signature to celebrate a thousand more post, let me list of all the great things you can expect of me on this board for 2012:
...... The same talkbacks you saw me do last year but with new episodes.
.... What are you doing still reading this? Move to the next post already! .