Hey guys, On Fiverr there are a ton of gigs offering things such as "I will add you site to XXX amount of social bookmarks + Rss ) ping for a fiver". My question is, how do they do this? I am interested in making these gigs as they are always getting a lot of buys from people and it looks like a good way to make some money. Do they use some software or what? Thank if anyone knows the answer!