It's true that in this moment it is hard to come up with practical benefits of semantic tags/structured data for end-users. Still, the structured graph they are part of holds a great potential and the Web of data is evolving fast.. I guess the time will show.
In general, I recommend not spending a huge amount of effort (equivalent to a big bet) without taking some effort to vet the concept in a low-cost way.
I understand your point. For now, I compromise between 'why' and 'how'. Explaining 'the why' of semantic tags (and the Semantic web in general) is still a great challenge, but I feel that moment is very close. Thanks for sharing your thoughts :)
Thanks for feedback. Right now RSS feeds are available for every page, but I definitely plan to make API in the future, and make it as open as possible for developers.
yes, me too, I have been using del.icio.us for 1+ year and now I have a gigantic un-useful tag cloud. Your app will not solve the problem of having too much tags, but at least make tags more meaningful.
I would suggest you to integrate it with del.icio.us in some way because I don't really feel like switching to another bookmarks system at this point.
Faviki is not for websites you visit frequently. It’s for websites you don’t want to forget. It provides a way to organize them and find it later. Wikipedia's role is to help organize bookmarks, and also to provide some useful info about concepts.