The title of your webpage is more than 70 characters long, the title should be precise and appropriate to the content of the page.
Although this is not relevant to Search Engine Optimization, but this text is shown in search results page, this is the first impression of your website the user sees. Therefore, it is recommended that you use this tag.
拼车, 拼车网, 拼车回家, 顺风车, 拼车上下班，
Although they are ignored by Search engines these days, doesn't hurt to have them on your website.
DTD XHTML 1.0 Transitional
Good going, DocType will help your website render correctly on older-gen web browsers and well the bane of our existence Internet Explorer.
Again this helps in rendering special characters, it helps users and your SEO score as well.
You are making it difficult for the Search Engine to understand the language of your page.
Great that you have a favicon, helps identify your website in bookmarks, tabs but has no impact on SEO.
Your URL's are perfectly formed, no need to change that.
Since it is not very difficult to enable GZip compression, its benefits far outweigh the cost of implementation. Give it a try!
You should incorporate more textual content in your website, but if your website is not content based then try to focus on the little content that you have to make it keyword rich and matching in context to your webpage.
Although not mandatory, proper heading structure is helpful to search crawlers in indexing your webpage and also giving proper importance to various sections of your page.
Your webpage contains 77 image(s) and out of which 1 don't have alt attribute.
You should always have an ALT attribute associated with an image if for some reason the image is not loaded or till it is loaded. Few images with alt attribute missing is still acceptible, but you should make a general practice to have this attribute in all your images.
Your webpage contains 21 table(s) and 21 table(s) don't have thead section.
You do not have table headers, i.e. THEAD section in your tables, therefore, the crawler will not be able to interpret the content stored in tabular form and just read it as plain text rather than consolidated tabular data.
WooHoo! No inline CSS. Not just it reduces page size and load time, but a separate CSS file can be cached by the browser as well.
Nowadays, most social plugins use IFrames, and its content is not indexed therefore it doesn't matter much. But one should not put site's content in IFrames, which is always a good practice.
Your webpage contains 1 flash embed(s).
WooHoo! No Flash, although it is almost impossible to avoid flash when dealing with online video, it is avoidable in almost all other situations. Its great to see that you are going the right way.
No plain text email address.
No email addresses in plain text, its great that you are protecting yours as well as your customers' information.
Its good that you have your server signature off, it helps in securing your website.
Web Server: Microsoft-IIS/6.0
Programming Language: ASP.NET