Hacks of the Week: Free Android Apps, Social-Media Marketing, and BP's 'Teachable Moment'

Every Monday morning we like to sift through the previous week's posts, round up the cream of the crop, and catalog them here for your viewing convenience. Take a look:

• Edit Word, Excel, and PowerPoint Documents on Your iPad
• The 5 Best Things About the iPhone 4
• The 5 Worst Things About the iPhone 4
• What We Can Learn From the Oil Spill and British Petroleum's Mistakes
• 5 Free Android Apps You Gotta Get
• Social Media Marketing: 10 Burning Questions
• Integrate Business Collaboration Tools with Outlook