I did this recently when trying to get tickets to a sold out Cloud Nothings show. I'd scrape Craiglist for postings every 10 minutes, and then send myself a text if any of the posts were new. I ended up getting tickets the day before the show.
Since the show was at a very small venue (capacity of maybe 500), I didn't have to worry about a constant stream of false positives. I would have needed to handle these if I were searching for tickets to a sold out <popular band> show, since ticket brokers just spam Craigslist constantly with popular terms.
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I did this recently when trying to get tickets to a sold out Cloud Nothings show. I'd scrape Craiglist for postings every 10 minutes, and then send myself a text if any of the posts were new. I ended up getting tickets the day before the show.
Since the show was at a very small venue (capacity of maybe 500), I didn't have to worry about a constant stream of false positives. I would have needed to handle these if I were searching for tickets to a sold out <popular band> show, since ticket brokers just spam Craigslist constantly with popular terms.