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Researchers at the Pew Internet and American Life Project polled Internet users and found that 11 percent are using Twitter and similar short-form online message services or status updates.

Profiling the Twitter set, Pew found that they are prone to mobile computing, frequently dashing off status updates from their smartphones or laptops using a wireless connection.

Roughly 20 percent of online adults between the ages of 18 and 34 said they use status-update services, compared with four percent of adults between the ages of 55 and 64, and just four percent of those 65 and older.

PHOTO OP (Shockwave, 7 MB) is a two-part interactive activity that introduces you to digital photography and digital photo editing. Use the virtual camera to create snapshots and explore lighting, focus, shutter speed, and compositional effects. After you've taken some photos, switch to the Photo Op editor and transform your pictures into something completely different. This Art Zone interactive is suitable for all ages. Young children will find it easy to take simple snapshots and transform or recolor their virtual photos. More advanced users can create complex artistic compositions by layering, applying filters, and experimenting with various special effects, lighting, and blends. If you need help, scroll down for some hints about how to use the program.  If your Internet connection is slow, allow the program to load fully, then come back to play.