I was recently reading the informatics blog Circuito Integrado (in Portuguese) from Folha de Sao Paulo (a newspaper in Brasil) where they stated in January that Web 2.0 is already in the past, giving space to the new Web 3.0 a.k.a web semantics. I have to admit, this concept of Web 3.0 is totally new for me, I was still getting used to all the cool things from Web 2.0!
According to Wikipedia, “the first step towards a “Web 3.0″ is the emergence of “The Data Web” as structured data records are published to the Web in reusable and remotely queryable formats, such as XML, RDF and microformats.“
In other words, web 3.0 websites would be developed in a way that data could be shared and reused through applications, communities, companies, etc. basically transforming the web in a huge database. Nice!
In the Circuito Integrado blog, he gives the website Wuala as an example of a Web 3.0 website, which I had never heard from before and found preety interesting!
Wuala is a free desktop application compatible with Windows, Mac, and Linux where you can drag and drop your files from your PC directly to the web, and vice versa. You can also access the uploaded files anytime from anywhere, even when your computer is offline, meaning that you can also use it to share all types of files with other people. They start giving you 1GB free space and if you want more, you are able to trade your hard disc space for more online space, making the idea “not to give you more storage in total (apart from the first GB provided by us), but to change the quality of your storage“.
Of course you have a public space, guarantee of the security of the data and many other services…check out their website here for more. Anyway, it’s my discovery of the week!
Nothing like being “on the beach” and having free time to read my feeds! 
