[mahul]

Well, as everything has two sides, I would say it depends on what you can handle (though I say this, I have put up my email only).

If you are a busy executive with pots of money and lots of work, you just can't take the risk.

If you are a lazy engineering student with lots to dream about and very little cash, who the heck cares?? And suppose you do put up your phone number, what goddamned trouble can you be put into?? And I doubt if anyone would take up the trouble to trouble a nobody like me(Unless of course you are a pretty lady, then it would be a big no-no). Frankly, I love it when some unknown lady calls me up, since it hardly happens.