However, I didn't achieve this milestone without some help. I'd like to publicly acknowledge the support of the Open Access PLoS Journals which I am proud to be associated with; The Society for General Microbiology, who have sponsored MicrobiologyBytes; and my guest bloggers, who have contributed in their own inimitable way.
Here's to the next half a million!
Update: Just had my first offer to buy the site. Not for sale (yet).