This might not come as a surprise since networking sites like LinkedIn and Facebook are becoming popular, effective ways to make business introductions and even hires. But a couple posts on some of my favorite blogs demonstrate that web 2.0 hiring has become precisely that. A few examples:

* Fred Wilson wrote a post saying "We are Looking for an Analyst" and is only accepting "links to your web presence"... fascinating. No resume. No email. No cover letter.

Fred and his firm are saying that your understanding of the web should be evident from your web activity - and that's all they need to know to get started. I would argue that's a great filter for the business they are in.

And if you look at the Union Square Ventures post, nearly 100 people have loaded up their web links (LinkedIn and blog urls are most prevalent). The most interesting submission was a candidate linking to a google search for his own name!

One question about this tactic though - those candidates have all made their interest public... which is problematic for their current jobs / employers and actually exposes their contact information to other companies (not bad for the candidate, but bad for Union Square right?)

* Josh Kopelman wrote a fascinating post about using Facebook Ads to connect with interested candidates for his various start-ups (updated study here). While the ads were more of a field study on Microsoft, Yahoo and Facebook's advertising system - the responses indeed indicate that this was a successful endeavor.

By the way, if you've never advertised on Facebook, spend $20 to promote something off-Facebook - it's a fascinating experience compared to AdWords, Y! and MSN...

* Finally, I posted recently about beRecruited hiring bloggers through Craigslist, Kijiji, and LinkedIn... and how those compare to hiring work through sites like Elance. While my efforts are less savvy (or interesting) than Fred's or Josh's - they have been quite fruitful (albeit quite time consuming).