One thing Google have omitted from the beta version of Google+ is ‘vanity urls’ – a personalisable short-link for your Google+ profile. Currently user profiles are accessed at plus.google.com/<21 digit integer>.
A new service, Google Plus Nick has launched, allowing users to choose a Google plus nickname which they use their gplus.to domain to shorten. So you could choose, for example gplus.to/plusdevs.
At the time of this post, the service already has 37.636 users signed up. I’m sure some users will find the service useful for now, but the app could become useless overnight if Google releases a similar service from within Google+.