Me. I've been trying to raise awareness about this for a couple of years.
It's had a sudden rush of interest because Brexiters think they can use it to support their case.
Sadly, as pointed out on the other thread about this, it's not a case of Vote Brexit, avoid TTIP.
It's more like, Vote Brexit, lose bargaining power and be left facing US trade demands alone.
The whole reason TTIP hasn't been signed yet after 2 years of negotiation is that for once the US is having to negotiate with an economic bloc large enough to say no to things. Their normal method is to fax a country their terms and conditions and tell them to sign.