Luci, read up on SEO. Not all the info you're getting is right. This is the article that I think explains it best:
Also, etsy doesn't "rotate" listings per se. As other items become more (or less) relevant given the types of searches that are entered, they rise/fall in the listings. We are not privy to the entire relevancy formula (otherwise people would game it), but favorites, repeat sales of a multiple item, and to a tiny degree recency seem to factor in. BUT, the MAIN THING is always strong relevancy.
So, to use Artgirl's example, because she has the EXACT phrase "earring bowl" in her title and in her tag, a search engine things "hey, it's highly probably that this IS an earring bowl." So anyone searching "earring bowl" will have that item come up high in a search. If I only had it in my title (and not in my tag (or something like "earring green bowl", then my item is less relevant than hers is.
Hope this helps.