I really like Fiverr. I use the site all the time for various needs related to my business including voiceovers, social media graphics, web design, Google indexing, Logos, ads, etc.
I have been pleased overall and there are a few freelancers I use on a regular basis. Just make sure you check out the person's profile. I tend to use Level 1 and Level 2 sellers. I've only had a few gigs that didn't turn out the way I wanted, but overall, I've achieved a lot of goals through Fiverr and plan to continue using the site.