[wenxun]

Thank you for your input, yes, it is hard to attract users in this field, reaching a critical mass is even harder, and feel free to share the papers your read with PubUp. We just launched 3 days ago, and welcome all kinds of ideas. Can you explain a bit "a researchblogging-like trackback system"? PubUp.org does have a trackback when users link to the URLs of other sources. I took a look at your site, seems a very nice blog!

[streptomycin]

I just mean that you should make it easy for bloggers to work with your website, to leverage the science blogging community. Research Blogging isn't my website, BTW, I just submit articles there sometimes. But it's something you should look at. All these independent blogs write about papers, submit their blog posts to Research Blogging (baasically like a trackback) and then they are indexed and publicized by Research Blogging. You could maybe do something similar... say, add upvote/downvote buttons people could use that would link to an article on your site, and then have a trackback on that article linking to the blog post.

[wenxun]

Yes, that's a good point. I think in addition to sharing research articles and reviews, the PubUp system can also be used to post or link to scientific news, blog posts, or anything related to the community, that's why we have a "News" category in addition to the "Bio, Chem, CS, Math, Physics, etc" categories.