Wear your accent with pride, if your co-workers' stereotyping persists then they're the bigots. Otherwise it becomes a cool personality trait others can't fake.

The existing users will preserve the character of twitter as new users arrive(http://i.snag.gy/kdu77.jpg).

How much does a half-gigabyte 2G pack cost in your region?

Rs. 125 for 15 days on the Idea network. Should be similar on others.