It depends on the hoster and how much you're willing to pay. If you're paying $2.99 a month then yes, you're probably going to have a less than predictable expe

It depends on the hoster and how much you're willing to pay. If you're paying $2.99 a month then yes, you're probably going to have a less than predictable experience. I work for a shared/dedicated hoster, we're geared price-wise at the higher end of the market and we provide shared hosting for our business customers. Our shared environments are closely monitored and never oversubscribed. We're constantly looking out for customer sites that misbehave and shut down those that are resource hogs or service affecting. We have loads of customers running the internet facing parts of their businesses on shared. Shared hosting, like all other things, is a case of "you get what you paid for".