Clearing your cache does not clear your comments. To do so, you can either uninstall the userscript (with associated preferences), overwrite each comment, or delete the entries in the about:config.
I didn't know where to put this. But it's a stumbler comment.
In my reviews I noticed at the end of the review comment from another stumbler. Asks you an odd question.:
Right now, nothing. The devs plan to use it in the future to control spam, identify top-rated comments, or prioritize the comments showing on your pages. Those are all just ideas, no final use has been announced.
It actually started before the beta, with the new review pages. I haven't heard it mentioned in the beta group.
StrangeJ
StarBright