PowWeb provides shared hosting, and has done so since 1999. Their cost is very reasonable as are the features they offer. For shared hosting they offer the typical features, and there are two things which stand out.
The first is their claim of zero downtime. In describing their technology, they use redundant servers and equipment at every part of their network infrastructure. In the past I've been with hosting providers where a single piece of equipment would go down, and take dozens of websites offline. Having the redundancy to allow them to claim zero downtime is a good thing.
The second is that they offer several preconigured web application packages that can be easily installed. If you wish to run one of these, then having it maintained by the hosting provider can be a good deal.