Please use a serif font for non-Titles. Every time I read something online that is a couple of paragraphs long (eg: documentation), I always wished that they have a Times/serif font version of this document.
It would probably not be as "beautiful" compared to Non-serif fonts but it would certainl help my eyes (and I'm sure for others as well - especially if we spend hours in front of a computer screen).
Find different ways in doing it. When I do not have time, I do it like how I did it in my previous projects/work. When I have some time, I try do it in a different way - look at my previous code and then try to improve.
Knockout.js is great. It doesn't force a whole framework on you. It is straight forward to use. You can slide it in into an existing project easily. I use it from turning pages to be merely more interactive to full fledged single-page app.
Firebug. It takes a lot of space. I work on 17" 5 year old Macbook Pro and could not imagine working on an 11" screen. Also ShiftIt and Alfred are probaly the most useful productivity apps I have used.
I use this site daily. I used this last night. I see you have updated the site a bit ;)
I also recommend this to almost everyone! Also, I suggest that you have a .com domain name to redirect to sleepti.me? This is because I spend a great deal of time and effort explaining the domain name - sleepyti.me :| Instead of having something like: "sleepytime.com". Sleepyti.me works great when typed but not when spoken (word-of-mouth). Just my 2 cents.
I'm interested to know if you have you been having consistent results using it? I tested it last night, and just woke up several minutes ago in fact, feeling refreshed and ready to go. I've been having trouble waking up even with an alarm, and I usually wake up feeling not so good. With this, I woke up at the very instant of my alarm, choosing the 3rd option. Then again, it could be because I was too excited to try out something new, although I was initially skeptical about it.