Seems hard to acieve, but possible. Google search algorithm comes to mind. But it is coosed so that sites cannot abuse search rankings like it was done in the old days, where to rank high for “books” you just had to repeat the word book endless amout of times. But the algorithm improved and now we can’t abuse it easyly.
Good question though if algorithm is open will people still be able to abuse? Good discussion you bring up here.
I think that this can be definitely tested out with SMTs. Steem On!