We just modified the tag clouds on our “recent” view.  Now, keywords in a tag cloud can be combined.  This enables more effective drilldown, particularly for large amounts of news on a topic.

For instance, if you select “Google” as a keyword in a topic profile with technology blogs, the number of remaining news tends to be quite large.  You can see this here:

http://mergeflow.net/profiles/news/tech_blogs/recent?mk=Google

When you visit this link, you see a tag cloud that is generated for all science and technology news tagged with the keyword “Google” (usually a fairly large number of news).  You can now drill down by selecting further keywords.  All keywords you select act as AND-filters.  The following link, for example, shows news from the same topic profile (technology blogs) tagged with “Google” and “open source” (of course, there might be no news in this view, depending on news flow on these topics):

http://mergeflow.net/profiles/news/tech_blogs/recent?mk=Google%7Copen%20source

You can also remove any of the selected keywords.  For example, the link below shows what you get when you remove the keyword “Google” (i.e. news from technology blogs tagged with “open source”):

http://mergeflow.net/profiles/news/tech_blogs/recent?mk=open%20source

We hope you find these new tag clouds useful.  Depending on how well these tag clouds work for our users, we might replace the existing tag clouds elsewhere in mergeflow.stream by these drilldown tag clouds as well.