Will want a tagline version of logo, tagline can be added as attache to main logo once logo is created (i.e., tagline is 2ndary)
Modern, authoritative, collegiate looking, something a college student or under age 30 person would find interesting and reputable.
Accepted File Formats:
Standard Web Formats (.jpg, .gif or .png); Vector Formats (.eps, .pdf or .ai)
The logo should feature the name of the wiki (which is also the website name):
(I'd emphasizing the "booksummary" over the "wiki" -- i.e., if I were writing this web address in an email to a friend I might call it "wikiBookSummary")
Feel free to be creative.
Once the base logo is chosen. I'd want version of the logo featuring the tagline added on, but adding the tagline will be simple. Most important is the logo.
The logo should have some graphical element that would be discernable so regardless of if you read English, you'd know what the brand was or something about the way it is represented that speaks to the product itself. [Think Nike Swoosh]