The phrase 'sigwhore' and 'sigwhoring' has been kicked around so frequently that its meaning is almost purely subjective.
Originally, it was meant as a putdown but it has taken a life of its own. It's funny how words morph over time.
Still, it all boils down to marketing.
$20 to $30 a day in places like the Philippines, India, Thailand, Bangladesh, etc = decent enough money for even recent college grads.
While I do all my forum posts, I can see why companies would hire outsourcing companies to do forum posts.
Still....
Just like in ANY OTHER KIND OF ONLINE PROMOTIONS there's a right way and a wrong way to do things...
Here are some basic rules c/o webmasterlabor.com

Check out Rule #8 first
1) Post no less than 10 words or 2 lines (totaling 10 words)
2) ENGAGE the idea posted by the OP - ie., stay on topic / be relevant
3) Keep the discussion going. Don't just drop a line and leave.
4) Sometimes, a laughing smiley would suffice but DON'T OVERDO IT. Don't become known as the laughing smiley dude.
5) When sharing News, make sure you use an engaging headline AND add value by providing commentary either in the description text or the headline. Remember: you're a CONTENT CURATOR. Think along the lines of Huff Po or Drudge Report.
6) If you can, add source citation links. These are particularly helpful and illuminating in political discussions
6A) Don't use $10 words when 25 cent words can do. Why? In research study after research study, the average reading and comprehension level of English markets is around the 8th grade. It's not because these individuals didn't finish high school but because people are busy and are in a HURRY. They don't want you to dissect the finer points of Camus. They want you to GET ON WITH IT, bro!
7) Have FUN. It's all about enjoying the company of community members. The more you give, the more you receive, the richer everyone becomes (in terms of value)
8) There are always exceptions to the rules but stick to these and you can build up a solid brand soon enough. It's all about ADDING VALUE (not because you SAY IT but because you DO IT).