Context: The main portion of the sites is static , with a blog attached and on one , an RSS news feed into the site . Because they 're on a blogging platform , I was able to add the Entrecard widget and build up more traffic right away . Since I had several sites to promote , and not enough time to spend visiting other sites and dropping my card , I spent $ 50 for 5,000 credits , enabling me to advertise on high traffic blogs right away . This has paid off since you get more credits for clicks received on an ad , and I ' ve received quite a few credits from those high volume sites .

Question: What is something that you 've learned from blogging about advertising ?
Options:
0. It is sometimes best to pay for advertising because it saves both time and money in the long run
1. I 've learned that one can do the advertising themselves by promoting their blog
2. I 've have learned that advertising can be expensive
3. None of the above choices .
Answer: 0