Free Software Magazine tests ODF
Free Software Magazine tests ODF transfer between OpenOffice.org, KOffice, and AbiWord.
“Numerous office suites and word processors support the OpenDocument format (ODF). ODF is an open standard for saving and exchanging office documents. The standard has been developed to provide an open alternative to proprietary, for example Microsoft Office, document formats.”
There are some problems, but they are most likely due to the newness of ODF support in these applications. As support matures, these problems should be wiped away.