You can have your cake and eat it too if you focus on client-side adaptation. For instance, with MIT-licensed Mobify.js which we recently released (http://mobifyjs.com) you can have any amount of mobile-specific functionality while keeping the URL of your desktop site intact. Works especially well if your site is complex!
Used Ticketive for a bit, looks like it could be a solid competitor for Rapportive/GMail itself, especially if third-party developers start contributing functionality.
From my experience, complicated earn-out structures are a nuisance. They are hard to set up fairly (a lot of edge cases) and even harder to deal with if things go south.
I second what nedwin said about vesting & equal split. Instead of focusing on putting equity value on every hour spent, think of the desired outcome (great company equally split by three cofounders) with a lot of time allocated and a kill switch in place.
PnP model is selling services to startups - first office space, then based on your needs it could be hosting, HR etc. They don't take equity and don't have any limits regarding how long you can stay there (because they get paid cash). However the owner (Saeed) also has a fund and does get in on some Series A rounds. There is a lot more about PnP & Saeed Amidi on thefunded.com
There's also the mobile view we did a while back at http://yc.mobify.me/ - back then pg said that the HN mobile strategy is in the works, so maybe we'll see something soon
Get up between 6 and 7am, check email and go for a work out or a long walk while the city is still sleeping. By 8 am figure out what absolutely must be done today by me and what should the team be doing (I am the "businessy" guy). Work until 7PM, take "re-charge break" until 9PM, work until midnight, go to sleep.