I needed to move about 12 medium to large cartons of clothing/personal items from the NYC area to SF area. Thumbtack gave only 1 referral, Reginald Tonge with Movers-For-A-Cause in Harrison NJ, who emailed asking for more info. After sending the info, I never heard from him again.
Thumbtack was unable to provide a mover of for 12 ordinary cartons.
I called North American Moving, and they referred me to ShipSmart, who is handling my move. Thumbtack has left a bad impression, don't know if I would ever (try to) use them again. For moving referrals, they clearly are not well connected.