Well Google/Yahoo/Bing bots are always doing the exact samething unless you tell them no to do so...
There's an accepted protocol to tell those and other well-behaved bots not to do so in a
do you dream of Electric Sheep?
No, but Pokemon trainers dream of electric mice.
If you're not cop, you're little people!
And even if you are a cop, you can still be little people.
If seeing the non-free film Blade Runner is a requirement of keeping a geek card valid, what method do you recommend to see this film without breaking the law, both inside and outside the United States? Redbox carries only new releases.
That said, I've also heard that storing hashes for passwords is a bad idea. Why would that be, if the hashes are long enough and salted?
Say you use userid + username + join_date as the salt. No matter what you use as the salt, a modern GPU can brute-force your hash by evaluating SHA256(salt + password) extremely fast for hundreds of common passwords in parallel. To defeat this, use a computationally harder hash than SHA256.
I cannot conceive that anybody will require multiplications at the rate of 40,000 or even 4,000 per hour ... -- F. H. Wales (1936)