Things you can do with a Bluetooth proximity hotspot?
You can allow people to share files:
What files can I send through an Hotspot ?
Images as .gif or .jpg files
Text as .txt files
Animated images as animated .gif files
Audio as mp3, mp4, wav and ringtones
Video as 3gp or mp4 files
Macromedia Lite as .wmv files
Java Applications as .jar files
Business Card files and Calendar Event files (.vcf , vcard)
And any file supported by a mobile phone (even .xls, .doc, .pdf ,etc)