With the rise of Steem value over the past few weeks, suddenly Steemit members who have been using the platform for 4-5 weeks plus have the power to award a reasonable amount of money with a single up vote.
An up vote from myself is now worth around $0.25. Not much, but enough for me to begin to get accosted with pointless, annoying 'Up Vote Me' requests. I can only imagine how many requests the larger Steem holders are getting... I haven't been down voting these posts, however I have been replying to them requesting that they contribute some thoughts/knowledge/questions/answers (SOMETHING!!!) to earn an up-vote. My patients is however already running thin, and I will begin to down vote these posts moving forward...
Some members are already fighting back. 
It's inevitable that this would happen, but as a community we can keep Steemit pure by working against these bad actors.
If anyone does see culprits of these kind of tactics, post links so we can see what to look out for and so we can down vote with confidence. First example is the link attached. See bottom of post... https://steemit.com/charity/@hisnameisolllie/we-can-harness-the-power-of-steemit-to-help-syrian-refugees-steemit-s-1st-charity-post-we-can-change-the-world-one-up-vote-at-a
EDIT:
Found another one; I have down voted...