My kickstarter was small but a few things I learned about running one that might help others:
The kickstarter dashboard is really good, you can see everyone, see their tiers and send out bulk messages to only those at a set tier, I had a feeling this was possible but you can't see what you can do until you launch your kickstarter.
You will get an email about EVERYTHING during the kickstarter, every single backer, pledge change, cancel, message reply, private message, feedback, likes to your update posts, everything. Be prepared for a full inbox every morning.
The 48 hour reminder email people can sign up for is rather good, my second to last day was one of the bigger money increases outside of day one.
about 75% of the backers were all from finding my kickstarter listed on the website directly and not from external sources, my only advertising was on twitter, a neogaf post in this thread and any friends who spread the word. If I was asking for a bigger number I would have tried harder so I do suggest you work out something.
When the kickstarter finished up 17% of the backers had card payment issues which they have seven days to fix, you can see who exactly has not paid in your kickstarter dashboard.
My video for the kickstarter was just gameplay clips with some music, i didn't put much effort into it but I now wish that I did, I did show enough off to give people an expectation but I should have explained things being shown with subtitles.
Only a small portion of backers came from external articles, again I never really advertised the campaign but out of 20+ websites linking to me, only a few % came from those sources.
Depeding on the size of your kickstarter I would say try to not update every day but at least twice a week with reasonable information, don't write a tiny update in the first few days, wait until you have some content. I would also make a web link to the latest news post and apply it to the top of my kickstarter information.
It doesn't matter how many times you explain something, people will ask you about it! I had a lot of PM's about stuff I had covered twice in updates which were directly linked from the kickstarter page.
speaking of pm's I also got a lot of people advertising, asking if I needed X or Y and other kickstarters asking to give them a call out in exchange for backing your project, for these I either said "thanks but i'm ok" or ignored if it was a obvious ad.