Reddit user eli0tz has brought attention to Google Ads seemingly blacklisting Ethereum as a keyword. The user said they have been using keywords containing Ethereum for the last 6 months without issue, in order to get more visibility for their smart contract auditing services; however, since January 9 they have noticed a change, and now it appears that ethereum has been blacklisted.
https://all-stocks.net/ethereum-blacklisted-in-google-ads-according-to-reddit-reports/I don't know about Google ads but ICO should prefer bounty hunters to give good results because they accept the ICO's token, Google will not accept that if they reject cryptocurrency related keywords then go for bounty hunters.