Viabtc has also reduced the free slots to 20 -- this will tighen the competition even more, rip.
Bad news, the chances of using viabtc free accelerator right now is slim to none, 100 slots were filled by bots in a wink, now with 20 slots normal humans stand no chance of successfully submitting their transaction ID's. I reckon it is only a matter of time before they offer zero free accelerations, and for one to use their accelerator, you'd have to use the paid service. So many of their blocks contain accelerated transactions that are not paying a high fee in a period when fees are high; and this could be the reason why they have reduced the free slot to 20.
Actually Viabtc is really hard to successfully accelerate transactions now with this development of only 20 slots like how fast can you be in the next hour to be able to accelerate your transaction for quicker confirmation. Honestly, this is so sad as I wanted to accelerate my transactions Viabtc this evening and I monitored the time so closely but yet I couldn't meet up.