I assumed they are scams because they normally are. But in all fairness I do my DD just to make sure.
When I see a LOI PR drop followed with a pump and dump pattern on a chart, followed by DILUTION GALORE, followed with no one in the office, followed with no updates, then I tend to just assume the obvious.
You'll see what I meant on Monday when you either hear LOI terminated or SILENCE... as they milk the cow more.