List of free and paid online newspaper archives, with strong emphasis on historical, non-U.S. sources. Highlights include the Australian government's Trove archive, the French National Library's Gallica archive, and the Israeli National Library's Historical Jewish Press archive. Although well-curated right now, use caution- this is Wikipedia and anyone can edit.
Newspaper and blog articles from the past 30 days. Because it covers only 30 days and includes less-than-credible blogs and tabloids, this should not be your first stop for news research. However, it can give you a general sense of what people are saying about a topic.