Again a confusion if google has started giving better rankings to URLs with keywords embedded. We have few blogs on wordpress with following setup 1. Webmasterworld forum type urls, keywords only in categories and article number for blog articles.
2. Keyword rich category and url
3. Only IDs
Webmasterworld type format was best one till day getting majority of traffic but suddenly since last 2 weeks of time google has started giving more importace to No. 2 type URLs above.
Number 3 type urls above are getting deteriorated everyday, we post same number of articles on all the above blogs (8 - 10)