My recent News Mapper mashup seems to have some success (at least for me :) ). Today I registered 114 visits which is my personal record for 1 day :D . Over 300 users have visited the project in the 6 days since when it is online now.
Moreover News Mapper has been listed together with other two projects on the official Google Mashup Editor Blog (below there is the link to the post).
Thanks for this feedback!