Hi orbetting: The replies above answer much of your question, however here is a little more advice from Juliette in our SEM team:
Clicks: In addition to the elements of bots crawling your site and adding to the number of clicks that operators see, obviously 1 visitor may very well be clicking through to multiple operators, and on multiple different casinos so that could be artificially inflating the operator numbers. However, putting the no-follow in will cut the bot issue out (as mentioned by Venomous & Brodog), but it wouldn’t cut out the multiple clicks from a single visitor.
Downloads / events: Operator events, such as downloads/sign ups aren’t likely to be available for G analytics to monitor, so it would be very unlikely that your analytics would show that event. However, you can still see the intent if you put an on-click event onto your CTA buttons / links. Unfortunately, that still will not be 100% reliable as a click on a banner or other site element might take the visitor through to the casino, they then leave and return later to sign up / download. That wouldn’t show up as an event to G analytics, but the operator system would be tracking it – so event tracking might be working fine, but just not have the ability to track those events.
Robots.txt: If you are going to edit it to exclude some bots, just make sure you don’t accidentally exclude search engine bots or, worse, all bots.
Hope this helps 