qjereq
1) poor English translation.
2) Core hack required.
Okay, now the good:
1) I didn't have to write this stuff myself!!
This plugin does exactly as described:
1) It logs all requested urls that are not valid (404 errors).
2) Allows you to map old/missing URLs to new URLs (one to one mapping, no wild cards).
I restructured my site to use K2 for all content thus changing all URLs of my content. Internally, this is no big deal since I could just fix any bad links. However, what about all the external pages that link to my site? All those links would be broken if it were not for Phoca SEF! It's not 100% automatic, but it's light years easier than the alternatives I thought of.
Hi, thank you for your review
1) Will be great to get one. I am not English native speaker, so the correct English will be appreciated
2) See the Phoca.cz forum, why I selected this method (core hacking) instead of e.g. system plugin, etc.
Thank you, Jan
One more thing. Someone mentioned below that you will "probably" have to buy add-on products for videos and photo galleries. That's only half true. You will need add-ons, but they are totally free and open source.

