How about a bot, that would search google every day using proxys for our search terms, then click on our sites in the google results, and stay on the site and possibly click on other links within the site, too? However google calculates the bounce rate... (?) It should address all of that. I think in these times now where search behaviour is more important than a lot of other things, this bot would sell like donuts next to a police station! Also its even almost white hat isnt it?!