I have been user fiverr for a while, though I have never trusted those 'seo' gigs and backlinks, they are just to spammy. Anyhow i had a client that cancelled the SEO agreement, though they failed to notify me within the 30 day window, so I forced them to renew, took 2 weeks plus some threats of legal lawsuit to hold the contract against them. They agreed to continue for the next 12 months just to keep to the terms, and then want out. So this was my chance to "TEST" on a site that has excellent SEO if some fiverr backlinks will actually help. I bought a gig for $5 got about 800 backlinks, within 2 weeks i had a keyword that never rank (very competitive) up to page 6, and another keyword that was on page 9 jumped to page 1, and a keyword from page 2 jumped to page 1. Now these are '2 word' keywords, competitive in nature. Anyhow, for those in doubt about fiverr, always worth testing if you have a good gut feeling Will i do it again? Sure, but only for a client i can care less about.