Gerard gave me a hint about the technorati tags: put them in your RSS feed
problem here: I do not use the MTEntryBody tag but the MTEntryExcerpt tag. the Body tag includes images etc, and I have Mod_Rewrite in use causing images not to popup in feeds. Therefore the Excerpt.
one thing I did was to extend th Excerpt with more words. Than check upon the Technorati Tag
Checking my feed (tip Gerard) I hardly could find or understand how to implement it. The technorati idea is not my idea as I do not want only technorati tags to be related to my categories.
Probably now all my pings and tags will be accepted by Technorati