In regards to Fiverr, it's not hourly but my how many "gigs" (offered services) you complete. You automatically charge $5 per gig with $4 in profit (minimum) so gotta make sure the gig you're offering is worth the time first of all. My gigs don't take longer than 10 minutes (I just leave reviews on people's books). So in theory, if I had nonstop work, it would be 6 sales per hr x $4 = $24, non-taxable, per hour. Realistically tho, I make about 6 sales per day and just complete them an hour before going to sleep (so $24 per day x 7 days a week not too bad). However, you can add "extras" to your gigs once you level up the account by making many sales (this took me a month to achieve -getting the first sales can be hard until you get reviews) and then you can offer additional services to the order for big bucks.
Like an SEO guy might make one like....
The Gig: "For $5 I will manually make 10 PR3 backlinks to your website"
An Extra: "For $10-$50 more, I will generate 200-1000 PR7 backlinks to the PR3 backlinks for more link juice"