Pros
Work when you want. From home, from the bar, from the plane. Pay is good if you're a fast writer. And note: pay is good if this is a SIDE GIG. It blows my mind that people try this as their full time job. That would be so stressful (+ no benefits.) I normally take on the minimum # of required articles each week and I enjoy the extra cash for travel, gifts, etc. This job does not (and cannot) pay my real bills. Start-up firm with fun culture. First conference is in 2018.
Cons
Queue sometimes runs low or dry, meaning don't rely on this for regular income. Quality Control (QC) can be sticklers sometimes (e.g. please reduce paragraph to 3 sentences...but if they'd taken the 10 seconds to do it, would already be off to client and earning revenue.)