We have found an problem with image URLs that have spaces in the URL. This may cause the Mail Application to crash on iPhones running 3.0 or later. It appears that any image url in html sent to the Mail app will cause it to crash. (spaces in other html like anchors etc. does not appear to have the same issue).

Solution or Workaround is:
a) When naming your images, make sure you do not put spaces eg. "my picture.jpg" should be "mypicture.jpg", "my_picture.jpg" or "my-picture.jpg" when you upload your picture to the website that is hosting your image.

Today our update Signature application was approved for download by Apple. The update includes some fixes for iPhone 3.0 compatibility.

We took the opportunity to add functionality to support Facebook and LinkedIn users who have user-defined names as part of their URLs instead of just numeric ids.

Join hundreds of satisfied users, visit our Signature page for more details

*** Update: this issue has been resolved in latest release ***

We have found an incompatibility running Signature under iPhone OS 3.0. If you have upgraded to OS 3.0, pressing Test Hot Link in the Edit Hot Link view may cause the application to quit. We have submitted a fix and waiting for Apple approval.

*** Update: this issue has been resolved in latest release ***

Currently Signature only supports the public profile url if you have not created a custom username. Signature has been modified to also accept LinkedIn usernames. The updated application is currently under review with Apple and will be available soon.

Currently we only support the non custom url format ie. http://www.linkedin.com/pub/your-name/number/number/number

The workaround until the next update is either
a) Check if you have the old style link stored somewhere e.g. you emailed a friend or business colleague

*** Update: this issue has been resolved in latest release ***

The new username feature from Facebook was released after Signature was released in the Apple Appstore. Signature has been modified to also accept Facebook usernames. The updated application is currently under review with Apple and will be available soon.