The phrase "a host of sites" is correct and usable in written English.
It can be used to refer to a large number of websites or locations, often in the context of discussing resources or options available online.
Example: "The research revealed a host of sites that provide valuable information on climate change."
Alternatives: "a multitude of sites" or "a variety of sites."
Pause is a quarterly digital magazine ("well-curated music periodical" in the words of its developer) that gathers reviews, features and streaming audio and video from a host of sites.
There are a host of sites helping some 15-18 million fans follow their leagues, including Yahoo, ESPN, CBS, and a host of smaller operations.
In a single move, Facebook greatly expanded its reach online, and deeply integrated with a host of sites without having to do integration work itself.
From Snitch.name to Spokeo.com, a host of sites are available to run down details on everything from a person's criminal background to who owns a website.
The Berlin-based startup competes with a host of sites that enable friends and other groups of people to club together to raise money for a purchase or occasion, most of which are probably better funded.
I expect that over time we will see a host of sites, especially those currently serving WMV of other formats into media player embeds, migrate their video serving to Silverlight.
There are nine active quarries and a host of disused sites, several of which have been designated as geological Sites of Special Scientific Interest by English Nature.
It's survived by just one major website for queer women, Autostraddle, and a host of smaller sites that Piccoli said lack the same pull.
A host of World Heritage sites are found in Greece, including the Acropolis in Athens (designated a World Heritage site in 1987), the medieval city of Rhodes (1988), and the archaeological site of Olympia (1989), to name but a few.
In online chats, Mafiaboy had bragged of temporarily disabling a host of Web sites.
A host of comparison sites claim to make this easy, while the energy companies are keen to lure new customers.
