Launching the beta version of a new web app shortly and want to provide a small number of new user tips that will appear one at a time the first 5-10 times a user logs on. I'm looking for some best practices or great examples of tips like these.
FYI, the tips would be oriented around helping users get the most out of the site and would be displayed at the top of the screen. The content would be along the lines of reminders to fill out profiles, invite FB friends, and other things of that nature. In addition, they would explain why taking this particular action would help.
For context, the site is a web app that helps user connect with their friends and our community in order to help them get a second opinion on potential apparel and accessory purchases.