Earlier today I was reading about and watching Youtube videos about the technology behind the Tangle.
The DAG or Directed acyclic graph . https://en.m.wikipedia.org/wiki/Directed_acyclic_graph.
Very interesting concept. A family tree can be represented as a DAG, because it is acyclic (does not reconnect to a past family member) and does not loop from a new family member to a past one.
The Tangle might be put to use for other things as well as M2M !
Yes, invest in IOTA. The Tangle with it's DAG format deserves support.