Top 10 species are: 1. Earthworms, 2. Algae, 3. Cyanobacteria...

What's so great about earthworms?

4. Rhizobia
5. Lactobacillus
6. Homo sapiens
7. Stony corals
8. Yeast
9. Influenza
10. Penicillium

Aw, come on. If we'd started with anything else — with the possible exception of stony corals — you wouldn't have paid any attention.