Web Promotion & PR

How can I best use the web to help promote a new product that I am bringing to market? I would like to get the blogs and related web sites interested in following the development of the market for the Soldius 1 Universal Solar Charger that my company, mysoldius.com, is distributing. It charges your mobile device directly from the sun, no external batteries, just plug it in and you have instant power. I would like to get the word spread about my website www.mysoldius.com, but have little experience communicating on the web. Is there a general mailbox or posting where people go to pick up stories and information for discussion? How do the blogs work and who is behind them?