The use of Articles Anywhere (n is really simple and well documented, but if you need support, you are sure to get it extremely quickly. In most cases I have received support in minutes rather than hours.
The team at NoNumber stand by their promise of excellent and quick support - that's for sure!
There are a lot of good extensions out there, but in many cases language can be an issue, but you can be assured that if your request is in English or Dutch ( may be other languages, but I am not certain), you WILL get an answer!
SIMPLY SUPERB AND EASY TO USE!!!
Support is pretty much instant, bearing in mind that Dmitry operates out of a Russian timezone and he is clearly determined to keep the extension up to date and moving forward.
I have tested it on Joomla 1.7.3 without a problem and I understand that it also works on J2.5.
If you don't have a requirement for a SOBI or K2 type driven site, this is the way to go.
Give it a try - it's quick to install and quick to get to grips with.
I've check in K2 items, plugin works there :)