Don't know what other affiliates are experiencing, but following conferences we get SO MUCH spam in our email inbox from advertisers we never even spoke to at conferences.
Take LAC for example - we were very careful as to who we handed business cards out to, and didn't let any of the people scanning badges to take our details, yet this week we must have been contacted 30 times for advertising, even from advertisers who didn't even attend LAC.
I highly suspect that email lists are sold on or passed on to various companies. For example, we've been receiving annoying emails from a company called 3gadz.com based in Israel. Numerous employees contact us with spammy requests, and even don't take us off their lists when you ask to be removed. What's even worse is that they generate false LinkedIn requests to some of our email addresses that don't even have LinkedIn accounts. It just seems these guys will DO ANYTHING to try get a lead, but it's totally the wrong way to do things if you want a lead with us, as we ignore 99% of unsolicited requests!
Perhaps the LAC affiliate attendee list is public somewhere. The latest bunch of people we didn't talk to just emailed us - Income Access, most likely trying to peddle some unknown sportsbooks to us that they did a couple of years ago too!
Don't fall into the trap of feeding these spammers! Having been to most of the conferences since their inception I now guard my contact details very closely, yet they still fall through the net somehow.