"The addition of support for tagging and link blogging were the warning shots but the coming months will see Reader evolve into a fully fledged Reader/Writer (let's call it ReWriter). Google ReWriter is the first product that will tie the major pieces of the Read/Write web together - RSS/ATOM (feeds), OPML, Social-Bookmarking/Tagging (folksonomies), Attention and Microformats."

I agree that Google Reader has been adding some fantastic functionality over recent months. Indeed I now use Google Reader as my main RSS Reader - just last week I loaded it up with a bunch more OPML files and RSS feeds. Also by reading the official Google Reader blog, you can tell the engineers are passionate about building up and adding new things to the product - something sadly missing in other top online RSS Readers, some of which have stayed largely the same for 2+ years now.

It remains to be seen whether Google Reader will add more 'writer' features over 2007 - Google has to be careful the product doesn't become too geeky and experimental. You can quickly scare off people with talk of OPML and microformats (guilty!). But I think Google Reader is the most interesting online RSS Reader around right now, so if they can integrate the 'writer' functionalities into the product in a way that they're very easy to use... the RSS reading market could come alive again.