KickstarterForum.org

I'll second Salvador's advice, what's in it for the blogger. As a blog owner myself (Crowd101.com), I need content that helps other crowdfunders not something explicitly about a certain campaign.

How do you use this to approach blogs? Don't make the story about you getting funding, make it about your experience with crowdfunding. Writing out an article (at least 700 words) about how you are marketing your campaign or about another stage in the process, i.e. how you put your video together or pre-launch activities. This will be much more interesting to readers and they are more likely to share your article. Put a one-paragraph description about your project at the end of your article. This is something the blogger can use and something that will get your campaign out in front of eyeballs.

Of course, this is from a crowdfunding blogger's perspective. If you're approaching a tech blogger, a social cause blogger, etc. then you'll want to adjust your article. The point is you want to write something that will interest their audience. I've had pretty good success with this kind of content marketing and every one of the campaigns that have submitted articles have gone on to meet their funding target.