I got some issues with bot spamming our website hosted at WPMU. So I got in contact with the live chat support team which are able 24/7. Mr.Rupok from the support team have been very friendly and try looking into each issues. By having a wpmu support team live chat available for almost any issue, it help a lot to try and solve the issue on-hand fast. And you got that comfortable feeling that someone are there to support you. I will continue moving my web design Clients websites to WPMU hosting, as this just proof how good support their are at WPMU. Also it's very easier to scale the hosting up and down to. Thank you!