If anyone reading this blog lives near me (Richmond, California) and wants to join us, please do. We're making snowflakes, nameflakes, and stars, and thinking about symmetry.

You can call me at 510 (Do spambots care about phone numbers?) 236 (I hope not, but if they do, they'll miss this, right?) 8044, for directions.

## Saturday, December 11, 2010

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Because most spambots use regular expressions, I suspect the average spambot would still be able to pick up the pattern as a phone number, since phone numbers come in 3-3-4 blocks, and a regular expression expects some non-digit characters between the blocks. A PERL expression like '(\d\d\d).*(\d\d\d).*(\d\d\d\d)' would still find the number.

ReplyDeleteOn the other hand, something like '406 (1st block) 555 55 55' would be much harder to automatically detect, since the pattern of digits becomes 3 1 3 2 2.

Cody, thank you for that explanation! Next time I want to put my phone number online maybe I'll spell out one of the digits.

ReplyDeleteSo you've convinced me that they

canfind my phone number the way I wrote it, but my other question is why they'd want my phone number.Hi Sue.

ReplyDeleteThis is unrelated to your Math Salon--though I'd like to come sometime!

I recently told you (via dy/dan comment-land) that SLZ High wasn't a good resource for learning about Complex Instruction anymore. I wanted to let you know that I just posted on my blog about some GOOD CI resources. I hope you'll hop over and check it out!

http://betweenthenumbers.wordpress.com/2010/12/16/complex-instruction/

Hi Sue,

ReplyDeleteWe are a homeschool family just moved to Point Richmond. I love your Math Salon idea... both of my children love math when it is fun.

Can we came visit?

Please let me know.

Thanks, Sara

Hi Sue,

ReplyDeleteWe are a homeschool family just moved to Point Richmond.

WE love your math salon idea... both of my children love math when it is fun!

can we came visit?

Please let me know.

Thanks!

Sara

Hi Sara,

ReplyDeleteI'll respond directly by email. Anyone interested in the salon can email me at suevanhattum on the hotmill (fix that word, you know how) system.