That sucks, searching is how I double-checked dubious craigslist posts. Select a couple phrases and search google. If identical posts pop up under various other cities on craigslist, then I knew for sure it was spam/fraud.
Google still provides a screenshot of CL pages - I doubt it would take much work for an enterprising hacker or 3taps to hook an OCR library up to that.
I don't think they can go back to scraping either, but I'm not certain of that aspect of it.
This may be the real reason behind the change. Perhaps CL just doesn't need it any more.