Popular tags and their galleries

So how come my gallery doesn't show up with any of the popular tags eventhough I have many pieces for several of those popular tags? What am I missing?

Possibly non-standard gallery names like "Ah/Oh My Goddess," which doesn't turn up in a search for either "Ah My Goddess" or "Oh My Goddess." For the same reason, only a few of my CCS and TnN galleries show up, because I use the full names for the first gallery, then the abbreviations for the rest. So a search for "Card Captor Sakura" or "Cardcaptor Sakura" will not turn up more than a few of my "CCS" galleries.

I suppose the answer would be to go back and rename the galleries so they would turn up in such searches. Meh, I'm lazy.

Speaking of, do we know if there is a way yet to change the sample pictures when a gallery is displayed under the popular tags section? I think that might be a neat feature if it's not already incorporated (I might not know how to do it yet with all the fancy cool changes that have happened recently).