I'm on my third week of working remotely - Here's what I've learned so far:

1. Massive sense of freedom - you own your time, and it's yours to be productive. YesGraph (my employer) is results based, and not hours-based. This is awesome as a remote employee.

2. Exercise isn't Easy - I used to walk over 2 miles/day to work, so I have to force myself to get enough exercise during the course of the day.

3. Tendency to Overwork - I'm being very proactive about trying to balance work. It's easy to fall into the trap of working too much (especially with 2 hours saved on the commute)

4. Social Interaction is Important - this is really important internally and externally. If I want social interaction outside my job, I simply need to go to a coffee shop or co-working space. It's important to do this internally too - which means doing hangouts with fellow employees.

I've actually been keeping detailed notes on my productivity (using Rescuetime) and exercise (using Fitbit), you can track my progress here -> http://lukethomas.com/working-remotely-tracking-progress/

We actually had an onsite last week, so I have some data to benchmark remote productivity vs. onsite that I'll publish soon.