On June 14th we had a jump of 2.5K subscribers all of a sudden and for 2-3 days I was just wondering what happened. First I thought it was a glitch but it did not happen for all. I jumped right into the feedburner account and saw the reason. It was the Netvibes count which was included in the Feedburner and wasnt there before.
Like you can see in the graph how Netvibes count was included and wasnt there a day before. Long time back there was an issues with Netvibes where false increase was possible which TC reported in 2008. So for me it was Netvibes and I am seeing it stable from last 10 days. So I think it should be working fine now and will not drop.