What is the best way to advertise only to college students?

[Kim Cunnings]

Twitter is powerful but can also damage your reputation if done awkwardly (of all people, students will leave if you are not fun and cool to talk to via twitter et all)

Same goes with blogging and social bookmarking sites like StumbleUpon. Create something catchy and lively - students have enough lectures to bore them. Link bait, non-traditional advertising venues, fun (scandalous?) T-shirts - something to carve into their unsettled minds.

Look into mobile advertising, it's going to get big. Clubs, bars - may be good but depends on your product. Hire campus promoters, as mentioned.