stephen has the best point above; essentially, don't take it too seriously. As vroom said, a million XP and $1 will get you a cup of coffee.

That said, remember that your vote is a comment on the writeup, not the person who wrote it. To think of voting as "giving XP to the writer" is the same (il)logic that stops people from voting on anything written by Anonymous Monk. If it's a good or bad writeup, vote appropriately. That way the higher-rep nodes¹ will show up on Best Nodes and can be bound and framed for posterity. ;-)

¹Remember, nodes have rep, monks have XP.