Basically, all you need to do is create an OPML file with the same feed copied and pasted as many times as you want and then import this into your NetVibes account. By using this trick any one can show fake feedburner subscriber stats for their blogs. Anything is possible nowadays but that’s not cool. I bet that there are a few bloggers out there who will take advantage of this opportunity.
This loophole is really something Netvibes and Feedburner will need to seriously fix soon so that people stop gaming and faking the feedcount system. It will be really interesting to see which blogs loose bunch of subscribers.
This video explains how it works :