Archimedes said, "give me long enough of a lever, and a place to stand and I'll single-handedly lift the earth".There are numerous levers out there. But they are only available to about 5% of the minds on Earth, because the rest are not imaginative.See "lever: what 2 lines are responsible for US$350 of the US$400 million of Hotmail's value"Here I'd like to expand on lever metrics.Will start off with some questions and sculpt the thoughts as we go along.Some rules-of--thumb1. The higher up the food chain the lever is, the higher its value2. The more enabling contacts and facilities are already there for it, the higher its value. (Less dependencies on the way to it being commercialized)3. Best value ones are likely to be not re-usable eg Hotmail's Free email or GMail's Invites or GMail's 2 Gig4. Best value ones are likely to wring the socks on:-"From meaning or lack thereof is born everything else -- tangible or intangible" (Bala Pillai: 2005)Memetics, semiotics, rhetoric and reason are the carriers of meaning. What levers are there to (a) reduce uncertainty of a medium's diffusion capacity (b) to exponentially reduce resistance to diffusion and (c) to exponentially increase meaning diffusion rates?How do we classify attention types? What types of actionable attention might be worth more than others?Can we form a matrix of attention type to diffusion method?Where diffusion method = diffusion media + hookThe hook is likely to have an entertaining element (eg GMail's running storage space meter). Or a reverse psychology element (exclusivity: only 6 invites for GMail). What other emotion-invoking hooks might there be for hooks?