We created the SEO experiment to determine how much text the major search engines (Google, Yahoo and MSN) can index. The other parameter we have explored is the maximum cache size. Here are the results: MSN is able to index more than Google and Yahoo and amount it can index is about 1 MB of text. Google is on the second place with 917 KB. Yahoo can index about 210 KB. For more information, see: How much are Google, Yahoo and MSN able to index.