I would say they have two kinds of fans. You either like them for their upvote or for their ranking system.

I would suggest delegating to them. 250SP is not a bad price to pay for a few upvotes here and there. Since they have some large delegators they are able to give out some pretty decent upvotes.

Try it out, even if only for the upvote value they can offer.

Using 250SP to selfvote or sell your upvotes will still be way less than the upvote they can give you.