It's interesting to me (or frightening) that some of the smartest people I know have the fewest endorsements. People I know doing [1]actual real work on things like "microcontrollers" have...3-4 endorsements with them, but people who I know have only maybe installed Linux, have 20 or so endorsements for "linux".
There are people I know who are post-graduate level experts on certain fields, and those fields are either not listed at all, or they have maybe 1 or 2 endorsements for it.
Stupid.
I'll keep just linking people to my github, and showing them projects I've built.
[1]: Actual real work as in: writing libraries that other people use. Contributing to the community in ways that effect the entire community.