Platelets and 300th blog post

On Friday will be my 300th blog post and I'm thinking about another contest. Should I go with a favorite blog post like I did with #200 or should I try something different?

Platelets

No, platelets aren't little tiny plates! I did talk about this a little bit before but since I'm giving platelets this afternoon and had nothing else to talk about I'm doing it again :-)

I had a big, long blog completed but this is all that was saved and I don't have time to recreate it...sorry!