Revive has a sensible SEO strategy that has not been affected by the various changes Google have made over the years - including the notorious 'Panda' update. According to Matt Cutts, the head of Google's webspam team, Google makes between 350 and 400 changes to the way it's search works, every year. Many SEO companys use slightly dubious strategies that work for a little while, until Google plugs the 'flaw', and many bad techniques can actually hurt your search engine position in the long term.
Revive's strategy has always been to try and be helpful. Google's job is to rank the most relevant sites highest - so rather than trying to trick Google, our SEO technique has always been to encourage Google by making our clients' sites the most relevant. This has the added advantage of making the site better for the users, and therefore more likely to turn into business for our clients.