My PictureMark Grennan


Welcome to my identity page. This is a self portrait.

Identity management on the internet is difficult. I manage this website myself.  If you need proof ask me to update this code:   Identity code:  3RuOR3AblZeGU8Uy7vbkWom7aBYPzzBC

Here is my public PHP key.

I have worked in the computer industry since I graduating high school in 1975.

My Instagram page (
Sharing MySQL knowlage ( I try to write posts weekly.
My Facebook account ( I follow my family here.
LinkedIn - (
GITHub -
SourceForge - (
Brain Bench - ( enter # 829201

I took these tests cold just for the fun of it.