An ad extension that places more than 1 link in a paid search ad. For example, beyond your standard ad copy and call to action, you could add a link to your current sales page or your store hours page. Sitelinks are typically free to use. And just like any other pay-per-click (PPC) ad, they don’t incur a charge unless someone clicks on the link.

The 3 Things To Avoid When Emailing Your List
When you decide to have an opt-in list, it is not just a matter of sending your subscribers your promotional newsletters or catalogs.