I signed up and posted a couple of links but I'm not really convinced why I should use your site. I think I understand the problem you are trying to solve beca

I signed up and posted a couple of links but I'm not really convinced why I should use your site. I think I understand the problem you are trying to solve because I use Tumblr and Twitter to do (what I understand to be) the same thing. Here's my use case in case you're interested. I wanted a place to post links to articles related to startup info that I found interesting. It would be something I could look back on to find old articles, and a way to share links with friends who may have a similar interest. It took me less than 5 minutes to set up the Tumblr blog. And everytime I want to post a link, I open a new browser tab to Tumblr, click on the "post link" (once in a while i post a video) button, paste in the link, type in a title and hit publish. I think it's easy and I'm happy with the process. In addition I also use Twitter in a similar manner. I only follow around 30 people. And the reason I follow them is that they post interesting links that I want look at. So my only use for Twitter is to share links. So all that being said, I have two systems that I use solely for sharing links. I don't know if I would want to sign up for a third network that doesn't (seem to) offer much differentiation, which would also require me to build a new social graph. I guess if you can offer some more differentiation, I might reconsider, because I do like sharing links. If you already offer differentiation, I didn't get that impression from your main web page and you should try to emphasize it more.