Yes, if you think they went above and beyond the call of duty, then thank them yourself. Tell them exactly what their answer meant to you. That’s far more reward than any gold star would be. If you feel it necessary to publicly acknowledge them, then you can thank them publicly, below their answer.
One thing that’s nice about fluther is that it works very hard to make sure people feel equal and equally valued. There are no competitions and pretty much few questions asking folks to rank each other are allowed or are asked. Ranking leads to bad feelings—there will always be people who feel like they have done just as well, but are not recognized. It’s a bad feeling when no one recognizes you, and causes people to leave.
There are a number of sensitive people here. Many people with depression or bipolar disorder or what-have-you are more sensitive to these perceived sleights than other jellies are. It can be very damaging, believe it or not, to see others picked out for awards and to feel overlooked or unappreciated. The fewer of these kinds of things we have, the better the atmosphere will be.
It’s difficult for many people to understand this, because they never felt very bad about themselves. I’ve seen this kind of thing be disastrous and lead to mass out-migrations from other sites. Of course, those out-migrations were fluther’s gain. But it could happen to fluther, too. So far, they have been wise enough to resist.
I think they should go further and ban any question that asks people to rank others in any way at all. People think they are doing a nice thing by calling people out for praise. They forget what happens to those who do not get praised—some of who do just as well as those who did get praised, but, for whatever reason, are forgotten when the time for praise comes.
If you have something to say, I think it is perfectly fine to say it privately. It really makes a difference to me when people thank me. A huge difference. Isn’t that what matters, anyway? That the person who helped you knows how much it meant to you?