I know things like networks and tiers and stuff are bad. But then I see things on other sites like seoclerks.com that offer x thousands of live visitors, although that sounds dodgy.
But what about things like social bookmarks? I would assume they would be legit. Currently the things I plan to use Fiverr for in terms of traffic are:
Maybe one large twitter or facebook service
SEO analysis services as most of them use the big services that we would normally have to pay for
RSS directory submission
Solo Ads - offering to place my solo ad on their website, although may use a proper service for that as they are priced reasonably anyway