Negative textbooks, Baidu's punishment for excessive SEO and countermeasures

Haha, I learned a lot about SEO in Admin5 and copied it right away. Don't say it's really helpful. After a while, my website search for "free phone" in Baidu ranks third on the homepage, bringing me a lot of IP traffic, but when I search for it again on the 15th day, the original location of my website became like this:
Enterprise E-Post Office
Email Address: such as: webmaster@mydomain.com mailbox password: mailbox settings: POP3, SMTP server www.yourdomain.com friendly reminder: prohibit the use of my post office system Group mail, or send spam, once discovered, the website will be closed ....
Www.mfdh8.cn/9 K 2007-4-22- Baidu snapshot

At that time, I was taken aback. My first reaction was that I was attacked by a hacker. I used to search for it like this:
FreePhone Number,FreeDozenPhone Number,FreePhone NumberSoftwareFreePhone Number_ Mfdh8.cn
SearchFreePhone Number,FreeDozenPhone Number,FreePhone NumberSoftware,FreeNetworkPhone Number,FreeText messages and other typesPhone NumberThe best assistant for resources !...
Www.mfdh8.cn/20 K 2007-4-5- Baidu snapshot

After asking for advice from others, I said that I had over-optimized the "Free Call", which made Baidu hate me. Fortunately, I didn't drop it directly. As long as you modify TILTLE, after a while, I quickly changed TITILE. After several days of waiting, I finally restored my real TILTLE. Now I search for it like this:

Free phone numberLa_ _ China's authoritative free network telephone distribution center
Free phone numberFind the latest free online phone number for you every day, provide free phone call tutorials for foreign network phones, and collect the lowest online discount network phone card for you, provide you with the most considerate services throughout the process !...