Eric DeMenthon, the man behind Padmapper, freely admits that "it still seems somewhat dickish to go against [Craiglist's] wishes." But he then proceeds to rationalize doing it anyway, using a "the good of the many outweighs the good of the few" argument:

"But then I did some back of the envelope estimates of how much of people’s time and effort it would waste if I didn’t, and it became clear how much less nice it is to waste the time of millions of apartment hunters out of stubbornness or some clearly inaccurate assumption about the will of the community."

If Eric is honestly doing this for the good of the community rather than for his own aggrandizement, and if I am right about the ethics and legality of a pure client-side solution, there is no excuse not to do it.

I'm pretty confused by your argument. How is making a bookmarklet better morally or legally than just using an API, or less self-aggrandizing? Bookmarklets are disallowed by the TOU as well. Is it because I'd just be making hammers instead of making and using the hammers myself?

And yeah, I have a bit of a communistic bent, so needs of the many outweigh the needs of the few arguments sway my decisions pretty heavily.

Isn't PadLister a direct competitor? CL is right to tell you piss off. No one is falling for this "man of the people" crap, it just makes you look dumb. Sorry to be harsh but you seem to be deceiving yourself, why not start a legitimate business?

PL was more of an insurance policy to collect feeds and other listings directly (it helps people post them back to CL). I'd be happy to take PL down if those were the terms for CL's complicity in keeping the CL search results.

>insurance policy...CL's complicity

What are you talking about? I can't parse this gibberish. I know you feel CL has no rights to their own site, but what the hell are they complicit in? The further you go down this road the more time you waste.

Have I done something to offend you? I'm just saying that I made that in the hopes that if I ever had to take CL search results off, PadMapper wouldn't be mostly useless. If CL wanted me to take PL down as a condition of them being OK with my site searching theirs, I would make that trade happily. I'm explaining that my goal isn't to replace them/threaten them/etc.

A negligible population would use such a tool, not only because hardly anyone in the "real world" uses bookmarklets -- and then what about NOSCRIPT?, but the time it would take to scrape, process, geolocate, and present the apartment listing would dissuade the most diehard fans -- all that assuming of course you could get around the cross-domain JavaScript issues lurking around every corner.

It's just not a viable solution.

for background (reposted from Quora)

Greg Kidd, 3taps.com Founder, Craiggers.com back... Edit Bio 6 votes by Trevor Bezdek, Eugene Otto, Pat Roberts, (more) With regards to any 3rd party use of exchange postings in the public domain, be they from Craigslist or any other source that is posting goods and services on the public internet:

1) the fact of an item for sale and the description of that item is not an issue of copyright. The long history of legal theory on this subject is best expounded in the Supreme Court case Feist vs. Rural Telephone. Furthermore, price discovery and transparency of supply and demand require open and equal access to facts in the public domain regarding goods and services for sale. A price quote for a stock or bond or piece of fruit does not "belong" to the originating exchange on which the item is initially offered. The price and identifying information, if put forth in an exchange with public access, is a public good rather than a private entitlement. I, the potential buyer, am free to record that price and those details for comparison or sharing or any other use I so choose to make of with those facts.

2) the facts associated with Craigslist data can be found all over the internet and do not have to be gleaned (scraped) from Craigslist itself. Craigslist is not operating a members only walled garden and has already availed itself to search engines which make their data (along with all other discoverable facts on the internet) available in public domain space. It might be harder to find the data indirectly than directly (as Craigslist doesn’t have an API of its own), but that doesn’t mean that the data isn’t already out there and available to anyone who is willing to put the work in to find and organize those (or any other) postings about goods and services for sale to the general public.

Treat point #1 as an understanding of “what the data is.” Treat point #2 as an understanding of “where the data comes from.” No Terms of Use can trump existing copyright law or first amendment free speech protections. Its true that we live in America where entities write all sorts of predatory contracts with outlandish claims of liquidated damages. But if the claims are, in fact, based on a bogus pretense, then eventually the fallacy will be challenged and over turned. And while a Terms of Use could set conditions for accessing particular private servers by CL, if PadMapper is using alternative public domain sources, what possible access issue could there be?

Being a bully usually works -- until it doesn't.

That's actually a pretty terrible website on a few counts. A lot of tiles I tried didn't show the heatmap at all.