Google has recently updated some of their policies.  One big change that may affect a lot of advertisers is the elimination of phone numbers in text ads.  According to the updated policy:

Phone numbers and vanity phone numbers can’t be used anywhere in ad text or in a sitelinks extension, except for company names that are actual phone numbers (such as “1800-EXAMPLE”). Phone numbers in ads are confusing to users who might be expecting to be led to a call session as opposed to a website. To let customers call you directly from your ad, use call extensions instead.

This is actually a benefit to advertisers, as you should be using Call Extensions with your ads, thus freeing up text in your ad to use a different call to action, such as “Buy Now” “Save Today” or “Register Online!”