Hello there Juan,
Great to see you here.

Yes you are right, I have been thinking about version numbering, and while taking a decision I tagged by date. The thing is, that because XMLPortletFactory only works under Liferay, I also would like to show, in which version works, so I thougt to tagged with Liferay's version number also.
But then again, actually XMLPortletfactory works in all 6.0.x versions. To make it short, doues this example bellow look good?
XMLPortletFactory-6.0.x-0.1_20110823.zip
6.0.x --> works on liferay 6.0.x versions.
0.1 --> program version
20110823 --> last update.
Maybe is too much numbers, probably date can be forgotten, because number will be increased in each fix...dont know. What do you think?
If anybody has any other suggestion, it will be appreciated.
Saludos, Jack.