I've eaten 4.6g of spirulina in the last 24 hours in the form of the Bolthouse Farms Green Goodness smoothie. No taste issues to speak of. I for one welcome our new algae overlords.
I avoid it, possible ALS risk.[1][2][3]
[0] https://en.m.wikipedia.org/wiki/Spirulina_(dietary_supplemen...
[1] https://en.m.wikipedia.org/wiki/Cyanotoxin
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3295368/
[3] https://www.tandfonline.com/doi/abs/10.3109/1748296090327848...
Lake Mascoma isn't too far from us, and we do see cyanobacteria blooms around here.