Mel's dashboard

I'm the owner of ChuckTV.net where we are conducting an online viewing party every Monday and Tweeting about it using the #chuckmemondays hashtag. The first three or four weeks, everything worked great. We trended every Monday and generated buzz for our project. For the last few weeks, however, we show up in the top 10 topics on third party rankings, but not on Twitter's trending topics.

We did have a couple of people thrown in Twitter jail right around the time this started thanks to some sort of script they were running to try to stuff the trends. We asked them to stop, and they did.

Are we being blocked? Did #chuckmemondays get censored due to the trend stuffing?