From what I understand, it has been removed by Hubpages. I've read varying theories on how hubs will populate in searches. I read that Hubpages will tag them automatically. I'm not sure if this is confirmed or speculation. I also read the removal of tags had something to do with people over-tagging. Again, not sure as to whether that is according to Hubpages or speculation. I haven't researched this at all, I just caught some exchanges between other hubbers throughout the day.
Nonetheless, it isn't just you!