Personally I'd give something away. Use this to get involved in and become valued to the community.
Make some flyers or booklets about long distance relationships. Get in touch with the student unions / advice services and offer them for free to give out to new students when they arrive in the autumn. Print 10-100,000 and ship 'em out.
Facebook is good, but (certainly in the UK, and I imagine the US too) there are a fair few forums devoted to university / college life. Quite a bit of their traffic is from new students networking and finding out about university life. Join and offer useful advice. Maybe see if you can write guest articles for student sites / newspapers / magazines.
While not directly related to your question, beef up and reorganise your website. There's some good stuff in your book, but I couldn't find most of it on the site. This is key content.
Edit: Oops, didn't realise how old the OP was. Hope this is still useful. :/