Rasende Roboter (Ricochet Robots) complexity

OK. I’m the only one to get excited by this… but there is a proof that Rasende Roboter (Ricochet Robots in the USA) is an NP-Complete problem! It’s weird. When you are given an NP Complete problem.. you can feel as a sixth sense that it’s NP Complete. But finding the proof is ofter quite harder :)
Read about it here.

Wow! Your Guest Book - Is Awesome!

OK.

I was on holidays (Porto Santo.. wonderful place! :D I will upload my photos on flickr sooner or later) and got back to work a couple of weeks ago. I sorted out comments just today.
In the next few weeks I will surely be busy because I have found a few ONLINE CHEAPEST PHARMACY with the “cheap cialis” I just needed and then I have so many porn and “teen amateur cams” to watch I just can’t get the time to read comments; so I (temporarily ?) disabled them. As soon as my penis is large enough thanks to the new techniques coming in every day, I will reenable them.
Now some notes to spammers :

1) Santa Maria Novella is a church in Ravenna (and a station in Florence), not a porn star (at least I hope there isn’t one).

2) “This is test-spam message, if you want stop spam on your site - just email me: xxxx@xxx.xx and your site will be immediately removed from spam-base.” Is not a good technique to get new mail addresses to be spammed, although we should never underestimate people stupidity… Beside, I think offering protection from spam using spam could be considered .. mafia.

3) If you translate your message in Italian, use a real translator. The following messages are not italian :

Scusilo,
voi compartecipe creativo luogo :D
Ci era un alberino e un autore come a legga circa:
Per trasmettere una Biglietti Auguri libera, scatti prego sopra una delle categorie cartoline scheda qui sotto. Saluti elettronici cartoline, mentre altri non possono caricarsi affatto auguri: frasi onomastico .. Luigi auguri di soggetti sms scrivere cartoline buon virtuali inviare lettera scaricare frasi d amore! Hm.. Noi non poteva scelga unico luoghi dove presenti, From questo link http://—–.com/ - frasi per laurea . Dal facciale in molle cartoline virtuali mia scusa attendente!

Saluti..
voi ottenuto piacevole fatto lavoro :-D
Qualcuno qui desideri a ritrovamento:
Gt materia cellulari dall gprs elettrico macchina sierosa giochi cellulare
Beta ed funzione insulto diabete diffusi cellulari vegetale! Hm.. Noi gradirebbe elimini favorevole pagine circa, From che del here http://—.com/ - cellulari symbian
Ammetta quello cercato male

That said, I would like to thank the two users posting real comments in these weeks and I will reply them soon. My real comments / spam ratio is then 0.2%. Wow.