| http://www.w3.org/ns/prov#value | - Crucially, companies are also getting better at measuring their returns from search marketing which, in turn, is leading to more investment.??? He added: ???The benefits of marketing on social media sites are not always as measurable but companies are increasingly experimenting with sites such as Facebook and Twitter as social media become more important.??? Lucy Cokes, Director at Guava, said: ??
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