1, web usage framework (iframe), including Baidu, so search engines hate frameworks.
2, too many pictures, too few text.
4, submit too frequently: submit more than 2 times in one month.
5, keyword density is too large: Unfortunately, search engines do not explain how high the density is the limit, generally think 100 words description contains 3-4 keywords is the best.
6, the text color is the same as the background color: the search engine thinks you’re stacking keywords to cheat it.
: 7, dynamic web content management system Web site easy to update a web page, but for most of the search engine trouble, many search engines do not receive dynamic pages, or charge only the first page, not down the depth charge. At this point, consider using the WEB server rewriting (rewrite) technology, mapping the dynamic pages of URL into a similar format to a static page URL. The search engine mistakenly assumes that it is a static page and will charge it.
8, free website space: some search engines refuse to index from free space sites, complaining about a lot of garbage, poor quality.
9, search engines crawl when the site is not online: if the host is unstable, there may be such a situation. To make matters worse, even if the site has been collected, re found, not online, will also delete the entire site.
10 blocked the robots indexing site incorrectly: there are two ways to block robots, with a simple text file under the root directory of the host server and a META tag in the web page.
11, using the turn (WEB jump).
12, the search engine can not resolve your DNS:, the new domain name registration takes 1-2 days before the entry into force, so do not register a domain name, submit the site immediately.
13, the link is too wide web site: links are too wide, low search engines find you, and then consider the site login to well-known categories, or do a few links.
14, server speed is too slow: network bandwidth is small, web download speed is too slow, or web pages are too complex, may lead to search engines have not found the text, the content will be suspended.
in general, what is not included is not considered to be of no value, but it is slow to access. Try to simplify the web pages, do not do too many clever effects, can be static, not dynamic. Blogging is the same.