I'm sure there are a few people here that use Fiverr and sites like it! One of the best ways is to just be active, make sure to login every day and make sure drive traffic to your gigs on Fiverr using social media sites, Facebook, Twitter etc etc. Post your service link in groups and that (but don't spam obviously). Another great way to promote your Fiverr services is to create a website with a blog and add blog posts about ways in which it can be useful to people. The best way is to find problems people are having and then offer them the solution to that problem via your service on Fiverr. 🙂